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Author Topic: Dividing head  (Read 129116 times)

Offline mattinker

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Re: Dividing head
« Reply #50 on: October 03, 2013, 03:44:56 PM »
VT and PekkaNF,

I cannot for the life of me remember why I did it that way!  The bolts in question have flat heads.

http://i917.photobucket.com/albums/ad16/mattinker/boreing%20bar%20gauge/adjustbbgauge_zps23fe9390.jpgDividing head

http://i917.photobucket.com/albums/ad16/mattinker/boreing%20bar%20gauge/borebargage_zps98a24643.jpgDividing head

Looking at the tool again, having all three heads on the same side would have made it more difficult to use. As you can see, I cut a screwdriver slot in the adjusting screw. I don't think I thought about it at the time, but I used M6 bolts, these have a 1mm thread. 1 turn = 1 mm I don't remember what the Gingery on looked like, I lost the lathe book when I moved here. A useful little tool, I don't think it was responsible for my mistake!!

Thanks for your comments, regards, Matthew
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Offline vtsteam

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Re: Dividing head
« Reply #51 on: October 03, 2013, 07:26:35 PM »
Now that you mention it Matt, I started to wonder how mine worked with three bolt heads together like that! Dug around and found a photo -- turns out it was only two bolts. Those and a piece of bent strap, and a piece of square keystock, per Gingery. Two screws and you've got a gauge capable of easily adjusting a boring cutter by a thousandth of an inch. Or less if you have shim stock that thin. Always so simple. Here's the pic:


http://i786.photobucket.com/albums/yy150/vtsr/vtsr/TecumsehBuild/BoringBarandAdjustersm.jpgDividing head
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Offline mattinker

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Re: Dividing head
« Reply #52 on: October 04, 2013, 04:18:57 AM »
VT,

two bolts. I don't know why I added the third. I also added lock nuts, I suppose I was afraid it might unscrew when taking out the feeler gauge!

Thanks for your thoughts, regards, Matthew
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Offline vtsteam

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Re: Dividing head
« Reply #53 on: October 04, 2013, 09:07:22 AM »
Lock nuts definitely good idea -- on mine they are on top, out of the picture against the bolt heads. They would be screwed down against the block of key stock when making an adjustment.

I like yours just as well -- it shows the same principle can be used in lots of ways -- and your memory of the book was really sharp. Enough to work out an equivalent tool with what was on hand. I think that's the real value of those books -- gives you a feel for solutions to problems with very simple materials and means, by intuition. Gingery kick started people into their own capability. He did for me anyway.
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Offline mattinker

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Re: Dividing head
« Reply #54 on: October 04, 2013, 12:40:51 PM »
Hi,

you give my memory far too much credit! I made the gauge over ten years ago. I got into casting through Gingery although I didn't build the series, I made lots of pulleys, sacrificial face plates, machine handles, various parts and a dividing head using a 100/1 worm gear it's big and cumbersome and 100 to 1 is not very practical. I think this gear type dividing head is far more suited to my temperament.

regards, Matthew

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Offline mattinker

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Re: Dividing head
« Reply #55 on: October 04, 2013, 05:05:54 PM »
Now that I've established that the diameter of the spindle is final it's time to make the chuck mounting.


http://i917.photobucket.com/albums/ad16/mattinker/spindlenose/spindlenose_zps76b9a636.jpgDividing head

I found this drawing on the web sometime ago, I don't know where I got it from, there was no signature. If it's a no no, I'll take it down with pleasure! I thought it might be usefull to somebody that has a Compact 8

http://i917.photobucket.com/albums/ad16/mattinker/spindlenose/7deg1_zps39e52b84.jpgDividing head

To get a rough position for the top-slide, I G clamped a piece of 15mm x 15mm cold rolled to the side of the top-slide, and wound in the cross-slide. I couldn't see any light between the cone and the CRS.

http://i917.photobucket.com/albums/ad16/mattinker/spindlenose/7deg2_zps52a30522.jpegDividing head

The method for finally setting the topslide came from John, Double Boost. The bolts holding the top-slide are nipped up lightly, the dial gauge is mounted to the top-slide at centre height, the top-slide is bumped gently to adjust.

http://i917.photobucket.com/albums/ad16/mattinker/spindlenose/7deg3_zpse49edea7.jpegDividing head

I got to within 1/100 of a millimetre, which I decided would be OK to start.

http://i917.photobucket.com/albums/ad16/mattinker/spindlenose/7deg4_zps23b8e77b.jpegDividing head

I should have roughed it out on the Colchester, there was quite a lot to take off!

http://i917.photobucket.com/albums/ad16/mattinker/spindlenose/7deg5_zps21a4b498.jpegDividing head

Some time later.

http://i917.photobucket.com/albums/ad16/mattinker/spindlenose/7deg6_zpsdc1e9eba.jpegDividing head

Getting nearer!

http://i917.photobucket.com/albums/ad16/mattinker/bluenose/P1020784_zps1743a2de.jpgDividing head

Close enough to start bluing! "Muppet", it is easier if you blue the chuck rather than the shaft, that way you take off the blue and not where the blue isn't!

http://i917.photobucket.com/albums/ad16/mattinker/bluenose/P1020785_zps4a1c147c.jpgDividing head

My lathe is new, as you can see it cuts towards the spindle centre using the cross-slide.

http://i917.photobucket.com/albums/ad16/mattinker/bluenose/P1020786_zps14fc4a9b.jpgDividing head

Delicately, a bit at a time.

http://i917.photobucket.com/albums/ad16/mattinker/bluenose/P1020787_zps40af99df.jpgDividing head

I have a little shoulder to remove from the corner.

http://i917.photobucket.com/albums/ad16/mattinker/bluenose/P1020788_zps870cd06c.jpgDividing head

I recessed the shoulder.

http://i917.photobucket.com/albums/ad16/mattinker/bluenose/P1020789_zpsdee936e8.jpgDividing head

Closer!

http://i917.photobucket.com/albums/ad16/mattinker/bluenose/P1020790_zps185d4868.jpgDividing head

http://i917.photobucket.com/albums/ad16/mattinker/bluenose/P1020791_zps1c80855b.jpgDividing head

Ooops! I'd deliberately left it thick at large diameter to allow for taking too much of the cone!

http://i917.photobucket.com/albums/ad16/mattinker/bluenose/P1020794_zps3f95c378.jpgDividing head

I'm not going to show you all the bluing, it's too monotonous!

http://i917.photobucket.com/albums/ad16/mattinker/bluenose/P1020796_zpsbffbd61e.jpgDividing head

Now we're getting somewhere!

http://i917.photobucket.com/albums/ad16/mattinker/bluenose/P1020797_zpsf9d04855.jpgDividing head

http://i917.photobucket.com/albums/ad16/mattinker/bluenose/P1020798_zpsd92b1ece.jpgDividing head

http://i917.photobucket.com/albums/ad16/mattinker/bluenose/P1020800_zps7150bc66.jpgDividing head

The finish is better than it looks! A clean up with emery-cloth, coarse and fine,

http://i917.photobucket.com/albums/ad16/mattinker/bluenose/P1020801_zps5744ee70.jpgDividing head

Knocking of the sharp bits.

That's it for tonight, regards, Matthew



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Offline mattinker

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Re: Dividing head, the cotter.
« Reply #56 on: October 06, 2013, 11:52:41 PM »
Hi,

The split cotter.

http://i917.photobucket.com/albums/ad16/mattinker/cotterout_zpsbc8137ae.jpgDividing head

The cotter is removed from the bore.

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/cottercut_zps01bf0cfe.jpgDividing head

Cut in two.

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle1_zpsb99b8cb3.jpgDividing head

A piece of 18mm CRS round is chucked up, trued up and faced off.

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle2_zpsc67a4dc3.jpgDividing head

Centre bored.

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle4_zpse2ea2043.jpgDividing head

Drilled 5mm and tapped M6

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle5_zps2a55afeb.jpgDividing head

Sawn off, I still haven't got around to making a parting tool holder!

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle6_zps252f8456.jpgDividing head

Faced off and the corners chamfered.

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle20_zps4aac9d1c.jpgDividing head

The addition of a suitable piece of threaded bar. I'm out of 6mm round or a suitable bolt to make a "proper" stud!

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle8_zpsbc359f04.jpgDividing head

I have neither an Ebonite ball as per the instructions, nor a ball turning attachment but I do have a ball bearing that I've softened by putting it in the barbecue (heating red hot) and leaving it to cool slowly in the ashes.

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle9_zps0842a574.jpgDividing head

Turning a small flat on the ball.

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle10_zps86b6222c.jpgDividing head

Centre drilling.

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle12_zpse86d8292.jpgDividing head

Drill 5mm tapping size for 6mm.

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle11_zps36cbf870.jpgDividing head

As the hole is short, I ground the point off a machine tap to make it a bottoming tap.

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle13_zps0db530e4.jpgDividing head

Tapping the ball.

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle19_zps3cd6dae2.jpgDividing head

Tapped!

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle21_zps9430d960.jpgDividing head

As I haven't got any 6mm round, I used a piece of 7mm, turning it down to 6mm and chamfering the end.

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle22_zpse228d4da.jpgDividing head

Threading with a 6mm die. I had forgotten just how worn that die is, I had to put it on backwards to finish the thread.

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle23_zpsf48cb4ce.jpgDividing head

Not a pretty sight, but it should hold the ball!

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle24_zpse782884d.jpgDividing head

The other end I threaded 7mm, a size that isn't common even hear in the heart of Metric France! Bad planning, I could have done both ends 7mms!

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle26_zpsd7980098.jpgDividing head

Cleaned up ready to install.

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle27_zps7a9a3e06.jpgDividing head

With the split cotter now in place, the "closer" is screwed in and tightened by hand to establish where the position of the lever. Marked with a scribe.

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle29_zps877b7cb9.jpgDividing head

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle30_zps9d2e3b3d.jpgDividing head

A 7mm flat is milled on the side. Kieth Fenner demonstrates this method in his Shafting video (youtube). When the milled surface is square, you "eyeball" the milling tool so that it's in the centre.

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle33_zps42d980ad.jpgDividing head

Centre drilled.

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle34_zpsd495a659.jpgDividing head

Drilled 6mm, Tapped M7.

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/handle35_zps5107bec2.jpgDividing head

http://i917.photobucket.com/albums/ad16/mattinker/cotterhandle/finished_zps0fff3e11.jpgDividing head

The completed split cotter and it's handle.

That's it for now , regards, Matthew


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Offline vtsteam

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Re: Dividing head
« Reply #57 on: October 07, 2013, 09:13:33 AM »
Looking good Matt!  :thumbup:
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Offline krv3000

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Re: Dividing head
« Reply #58 on: October 07, 2013, 03:11:22 PM »
thats cuming on nice a bit of topic have you got the travalnshons ofing stedy for your lathe if so can you do a diagram ofit so i can mack one for my lath
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Offline mattinker

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Re: Dividing head
« Reply #59 on: October 07, 2013, 08:28:18 PM »
Quote from: krv3000 on October 07, 2013, 03:11:22 PM
thats cuming on nice a bit of topic have you got the travalnshons ofing stedy for your lathe if so can you do a diagram ofit so i can mack one for my lath

Thanks KRV. Sorry, I can't help with either kind of steady for your lathe.
Regards, Matthew
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Offline mattinker

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Re: Dividing head
« Reply #60 on: October 07, 2013, 08:29:50 PM »
Quote from: vtsteam on October 07, 2013, 09:13:33 AM
Looking good Matt!  :thumbup:

Thanks VT! It's good for the morale!

Regards, Matthew
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Offline mattinker

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Re: Dividing head
« Reply #61 on: October 08, 2013, 04:37:57 AM »
Quote from: mattinker on October 07, 2013, 08:28:18 PM
Quote from: krv3000 on October 07, 2013, 03:11:22 PM
thats cuming on nice a bit of topic have you got the travalnshons ofing stedy for your lathe if so can you do a diagram ofit so i can mack one for my lath

Thanks KRV. Sorry, I can't help with either kind of steady for your lathe.
Regards, Matthew

Hi KRV, I came across the parts manual for the compact 8 pages 22 and 23 are traveling steady and fixed steady. I hope this is of some use!

Regards, Matthew
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Offline mattinker

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Re: Dividing head
« Reply #62 on: October 08, 2013, 09:26:18 PM »
Hi,

to finish off the ends of the body casting, I turned the work round in the lathe to fly cut the other end.

http://i917.photobucket.com/albums/ad16/mattinker/bigdrill/Cast%20nose/flycut1_zps8f6af049.jpgDividing head

Set up.

http://i917.photobucket.com/albums/ad16/mattinker/bigdrill/Cast%20nose/flycut2_zps36f33a06.jpgDividing head

http://i917.photobucket.com/albums/ad16/mattinker/bigdrill/Cast%20nose/flycut3_zps8d422560.jpgDividing head

Finished. Now, both of the ends of the bore are square with the bore which will enable me to put it between centres on the Colchester to tun down the recess for the banjo, surface the banjo end face.

I want to see how the casting for the banjo is. There are signs of slight pitting.

http://i917.photobucket.com/albums/ad16/mattinker/banjo/banjo1_zps75360f9b.jpgDividing head

Setting up to face one edge.

http://i917.photobucket.com/albums/ad16/mattinker/banjo/banjo2_zps858642cf.jpgDividing head

Taking the top off.

http://i917.photobucket.com/albums/ad16/mattinker/banjo/banjo3_zpsa2574670.jpgDividing head

Having skimmed both sides, the work will sit nicely in the vices.

http://i917.photobucket.com/albums/ad16/mattinker/banjo/banjo4_zps8ffedb22.jpgDividing head

My mill is slightly out of tram, not enough to be a problem here. As I'm going to rotate the head later, its not worth adjusting it now.

http://i917.photobucket.com/albums/ad16/mattinker/banjo/banjo5_zps000c1f5e.jpgDividing head

Having skimmed the other side, I set up the work on a round bar and got it as straight as I could between the trued sides.

http://i917.photobucket.com/albums/ad16/mattinker/banjo/banjo6_zpsc4e2f2eb.jpgDividing head

A true face.

http://i917.photobucket.com/albums/ad16/mattinker/banjo/banjo7_zpseb31b37d.jpgDividing head

Turned back over, on parallels to bring the first face into parallel with the second.

http://i917.photobucket.com/albums/ad16/mattinker/banjolayout/layout1_zpsddfa542f.jpgDividing head

In order to layout the position of the hole on the Banjo, I started by bluing it with marking fluid and measuring it with my height gauge.

http://i917.photobucket.com/albums/ad16/mattinker/banjolayout/layout2_zpscfb3a8cd.jpgDividing head

I missed a photo of drawing the line with the height gauge. The gauge was adjusted to half the height and I scribed a line with it along the centre. Using the dividers I scribed the largest circle I could get into the piece of work.

http://i917.photobucket.com/albums/ad16/mattinker/banjolayout/layout3_zps05da4517.jpgDividing head

Centring the the part to the middle of the future bore.

http://i917.photobucket.com/albums/ad16/mattinker/Banjo%202/banjo21_zps84cba28c.jpgDividing head

The same old boring process. Centre drilling.

http://i917.photobucket.com/albums/ad16/mattinker/Banjo%202/banjo22_zps8e5a27e3.jpgDividing head

A biggish pilot drill.

http://i917.photobucket.com/albums/ad16/mattinker/Banjo%202/banjo23_zpsffedfda1.jpgDividing head

More drilling!

http://i917.photobucket.com/albums/ad16/mattinker/Banjo%202/banjo24_zps4b5f6506.jpgDividing head

Again!

http://i917.photobucket.com/albums/ad16/mattinker/Banjo%202/banjo25_zps022bebd2.jpgDividing head

43mm! I'm roughly 2mm off final dimension.

http://i917.photobucket.com/albums/ad16/mattinker/Banjo%202/banjo26_zpsf49a007c.jpgDividing head

I wanted to see how deep the pitting was. I think it's superficial and a lot of it will go with the final bore.

http://i917.photobucket.com/albums/ad16/mattinker/Cast3/centres1_zps0cbe9f0c.jpgDividing head

Between centres, I turned a shouldered piece of large round in the four-jaw and then turned a cone on it. As you can see, I tried it as it was , it worked, but a dog was in order.

http://i917.photobucket.com/albums/ad16/mattinker/Cast3/centres2_zpsff5513c9.jpgDividing head

Dogged!

http://i917.photobucket.com/albums/ad16/mattinker/Cast3/centres3_zps12f5d233.jpgDividing head

The Colchester is bolted on to a concrete riser block, no movement or vibration!

http://i917.photobucket.com/albums/ad16/mattinker/Cast3/centres4_zps03a05a93.jpgDividing head

Squaring up the front edge of the base and beginning to turn down for the banjo seat.

http://i917.photobucket.com/albums/ad16/mattinker/Cast3/centres5_zps404bff5b.jpgDividing head

More of the same, I liked the photo!

That's as far as I've got for the moment! To be continued.
Regards, Matthew.
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Offline tom osselton

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Re: Dividing head
« Reply #63 on: October 08, 2013, 11:43:55 PM »
Looking good mind you I would be standing out of the line of fire if those c clamps let go!
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Offline mattinker

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Re: Dividing head
« Reply #64 on: October 09, 2013, 06:58:26 AM »
Tom,

Thanks Tom. I was well out of the way!

Regards, Matthew
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Offline NeoTech

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Re: Dividing head
« Reply #65 on: October 09, 2013, 07:41:14 AM »
When i see solutions like this i always realize..  Safety is really subjective and you can get away many times with setups that makes gray hair grow on younger machinists that just got out of school..     :headbang:
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Offline Mayhem

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Re: Dividing head
« Reply #66 on: October 09, 2013, 08:06:53 AM »
Nice work Matthew, those last pics look like fun...
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Offline vtsteam

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Re: Dividing head
« Reply #67 on: October 09, 2013, 09:15:57 AM »
Quote from: NeoTech on October 09, 2013, 07:41:14 AM
When i see solutions like this i always realize..  Safety is really subjective and you can get away many times with setups that makes gray hair grow on younger machinists that just got out of school..     :headbang:

Too late for me! And I ain't dying it black.

I like a faceplate and angle iron, bolted part, and a counterweight because that's what I started out with. But if I didn't have those, I'd probably cob something up. So, guilty, but gray, too!
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Offline vtsteam

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Re: Dividing head
« Reply #68 on: October 09, 2013, 09:20:17 AM »
Just realized there may be some idiom trouble in my last statement -- on this side of the pond (and in this state at least) the word cob is the equivalent and shortened form of "to cobble."
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Offline mattinker

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Re: Dividing head
« Reply #69 on: October 09, 2013, 12:49:07 PM »
Mayhem,

it was fun!!

Neotech,

there's very little force exerted on those "G" clamps, they are cheepo, which means that the surface of the clamp is rough and tends to bite in!
They are 2", 50mm clamps so they don't weigh much!! As for the white hair, I couldn't get any whiter!!

VT,

it goes between centres, so I could have drilled two holes in a piece of flat bar and bolted it on but, "getter done!" Idioms with explanations, this forum is a great place for an ever expanding vocabulary!

Regards, Matthew
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Offline doubleboost

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Re: Dividing head
« Reply #70 on: October 09, 2013, 01:04:05 PM »
Coming along very well
John
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Offline mattinker

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Re: Dividing head
« Reply #71 on: October 09, 2013, 02:13:20 PM »
Thanks John, I'm enjoying it, I just hope that I can keep on having time to do it!

Regards, Matthew
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Offline krv3000

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Re: Dividing head
« Reply #72 on: October 09, 2013, 03:33:17 PM »
hi its shaping up nice thanks for the hellp regarding the stedys i have the parts manuwel but it gives no dimenchons i will just have to figer them out
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Offline mattinker

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Re: Dividing head
« Reply #73 on: October 09, 2013, 04:02:08 PM »
KRV,

the only critical dimensions for the fixed steady are centre height and the "foot" where it sits on the bed. Even these aren't that critical as the adjustment in the three finger can compensate!

Thanks for the encouragement on the dividing head!

Regards, Matthew
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Offline mattinker

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Re: Dividing head
« Reply #74 on: October 11, 2013, 10:32:37 PM »
Hi,

I just had to upgrade photobucket, I was over the 100Giga /month bandwidth. I hope nobody was inconvenienced by this!

Back to turning down the "nose" of the main casting.

http://i917.photobucket.com/albums/ad16/mattinker/Cast4/Centres_zps7254396a.jpgDividing head

For those of you who see me as dicing with death, The casting is between centres, it's running at around 150rpm, so the loads on those two "G" clamps is pretty low. Fortunately it's not running in a division of 50 hertz so it looks like it's spinning although I can't really see it clearly! Mind your fingers!

http://i917.photobucket.com/albums/ad16/mattinker/Cast4/Formtool2_zpsc18b8dd1.jpgDividing head

http://i917.photobucket.com/albums/ad16/mattinker/Cast4/Formtool1_zps407e2855.jpgDividing head

I'm using a form tool to cut a radius in the corner of the nose, the tool itself is difficult to see.

http://i917.photobucket.com/albums/ad16/mattinker/Cast4/Shoulder1_zps7022cc9a.jpgDividing head

Beginning the cut on the shoulder where the banjo sits.

http://i917.photobucket.com/albums/ad16/mattinker/Cast4/Shoulder2_zps66bd280d.jpgDividing head

More shoulder!

http://i917.photobucket.com/albums/ad16/mattinker/Cast4/Shoulder3_zpse954bc3d.jpgDividing head

I don't have any dials on this lathe, I prefer using a "clock" it's "what you see is what you get", at least, as far as the radius is concerned!

http://i917.photobucket.com/albums/ad16/mattinker/Cast4/Shoulder5_zpsed47c290.jpgDividing head

Getting close! I see that I didn't take any photos of measuring with the mike!

http://i917.photobucket.com/albums/ad16/mattinker/Cast4/Shoulder6_zps503246bd.jpgDividing head

I do like action shots.

http://i917.photobucket.com/albums/ad16/mattinker/Cast4/Shoulder8_zps414d6c0f.jpgDividing head

45° tool, taking of the sharp corners, hmm, it's a bit hard to see!

http://i917.photobucket.com/albums/ad16/mattinker/Cast4/Shoulder7_zpsfc948a9d.jpgDividing head

At least I got this one right! Now I can go back to the banjo.

http://i917.photobucket.com/albums/ad16/mattinker/Banjo5/acentrefind1_zps534d292a.jpgDividing head

Centring the bore.

http://i917.photobucket.com/albums/ad16/mattinker/Banjo5/Bore1_zpsb3ddd1a7.jpgDividing head

First cut.

http://i917.photobucket.com/albums/ad16/mattinker/Banjo5/Bore2_zps85069ff1.jpgDividing head

This is an imperial boring head, I find it easier to use a dial gauge to adjust, nice big dial, instead of a tiny little thing in thousands of an inch!

http://i917.photobucket.com/albums/ad16/mattinker/Banjo5/Bore3_zps7e33b2f0.jpgDividing head

I bought this bore gauge set for this job, a cheepo that I had to smooth the ridges of the ends before it would work properly.

http://i917.photobucket.com/albums/ad16/mattinker/Banjo5/Bore4_zps7fd36a62.jpgDividing head

A nice sliding fit!

http://i917.photobucket.com/albums/ad16/mattinker/Banjo5/horizontal1_zps6cad89df.jpgDividing head

One of the nice things about this milling machine is you can also use it horizontally. Finding the centre of the thickness of the banjo.

http://i917.photobucket.com/albums/ad16/mattinker/Banjo5/horizontal2_zps7324f4b9.jpgDividing head

Finding the top to place the hole for the pinch bolt.

http://i917.photobucket.com/albums/ad16/mattinker/Banjo5/horizontal3_zpsaaf2b51c.jpgDividing head

The usual suspects, centre bore.

http://i917.photobucket.com/albums/ad16/mattinker/Banjo5/horizontal4_zpse72c7bf4.jpgDividing head

Muppet! I had to centre bore twice, I forgot to deduct the 5mm radius of the centre finder!

http://i917.photobucket.com/albums/ad16/mattinker/Banjo5/horizontal5_zps3df9ee1d.jpgDividing head

Drill, 6.75mm right through, tapping size for 8mm.

http://i917.photobucket.com/albums/ad16/mattinker/Banjo5/horizontal6_zps92992fea.jpgDividing head

Drill half way through, 8mm clearance.

http://i917.photobucket.com/albums/ad16/mattinker/Banjo5/horizontal7_zps4a00d5a4.jpgDividing head

I had to tap with an adjustable spanner, I don't trust my self to power tap and you can't just switch off and let it run through, there's a serious very efficient spindle brake.

http://i917.photobucket.com/albums/ad16/mattinker/Banjo5/horizontal8_zps49b236b8.jpgDividing head

I didn't measure the cutter, a second hand one, beautifully sharp, 1mm under the 19mm marked on it!

http://i917.photobucket.com/albums/ad16/mattinker/Banjo5/horizontal9_zps752b0ee3.jpgDividing head

The next on up is 22mm so I had to lift it to take the corners off as well.

http://i917.photobucket.com/albums/ad16/mattinker/Banjo5/horizontal10_zps07a3c805.jpgDividing head

I have three of these arbours, by the paint marks on them one of them is bent! They're 25.4mm the French don't know that they're using inches on some of their tooling!

http://i917.photobucket.com/albums/ad16/mattinker/Banjo5/horizontal11_zpse91fdd33.jpgDividing head

2mm slitting saw.

http://i917.photobucket.com/albums/ad16/mattinker/Banjo5/horizontal12_zps79efc2a1.jpgDividing head

http://i917.photobucket.com/albums/ad16/mattinker/Banjo5/horizontal13_zps1d8606e0.jpgDividing head

It works!

That's it for now, be back soon, regards, Matthew


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