Author Topic: Fitting a Multifix Aa  (Read 6173 times)

Offline Dell

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Fitting a Multifix Aa
« on: February 13, 2024, 10:42:02 AM »
A bit of advice please, I have made a new post for the Multifix size Aa on my Myford and as I didnít use the steady pin initially I thought I would do it as I have it apart, underneath are three equally spaced holes although I only need one but am not sure how to get one in the correct place in the compound if itís slightly out the holder wonít be square to the headstock , I know the Multifix will tour but it could be possible to get the hole half a hole out so if anyone has a suggestion or has already done it would be much appreciated , hope that makes sense.
Dell
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Offline philf

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Re: Fitting a Multifix Aa
« Reply #1 on: February 13, 2024, 11:59:28 AM »
A bit of advice please, I have made a new post for the Multifix size Aa on my Myford and as I didnít use the steady pin initially I thought I would do it as I have it apart, underneath are three equally spaced holes although I only need one but am not sure how to get one in the correct place in the compound if itís slightly out the holder wonít be square to the headstock , I know the Multifix will tour but it could be possible to get the hole half a hole out so if anyone has a suggestion or has already done it would be much appreciated , hope that makes sense.
Dell

Dell,
Perhaps post a photo. I'm guessing the holes are blind.
I have the Dickson type toolpost on my lathe and it doesn't have a location dowel (nor does it need one). Because it's basically square I can easily set it with a square.
Phil.
Phil Fern
Location: Marple, Cheshire

Offline Dell

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Re: Fitting a Multifix Aa
« Reply #2 on: February 13, 2024, 12:30:48 PM »
Here is a picture of the underside of the Multifix I only need to use one hole and the holes are blind.
Dell
 
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Offline philf

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Re: Fitting a Multifix Aa
« Reply #3 on: February 13, 2024, 01:22:27 PM »
I'm guessing that the three holes would locate the body in different positions so e.g ideally you'd get one to position the tool to be square to the topslide and the others would give you a few degrees variation. I haven't been able to find a drawing with the hole positions online.
Phil Fern
Location: Marple, Cheshire

Offline Dell

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Re: Fitting a Multifix Aa
« Reply #4 on: February 13, 2024, 01:48:26 PM »
No I couldnít find a drawing either , I only need to fix it square to the compound because itís adjustable in 40 other positions without undoing the centre locknut.
Dell
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Offline smiffy

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Re: Fitting a Multifix Aa
« Reply #5 on: February 13, 2024, 02:03:38 PM »
I have 3 of the larger AA size toolholders and they all have 2 holes at 180 degrees

Offline philf

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Re: Fitting a Multifix Aa
« Reply #6 on: February 13, 2024, 05:57:40 PM »
I'd just put a toolholder in and set it with a square.
Phil Fern
Location: Marple, Cheshire

Offline Dell

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Re: Fitting a Multifix Aa
« Reply #7 on: February 14, 2024, 02:58:02 AM »
Thatís what I had done up until now but when I last used a knurling tool the whole lot moved hence wanting to add a single pin.
Dell
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Offline philf

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Re: Fitting a Multifix Aa
« Reply #8 on: February 14, 2024, 04:35:00 AM »
Dell,
What sort of knurling tool are you using?
The clamp style knurling tool is far better for your lathe than the standard (one sided) type and isn't likely to move your tool post.
Phil.
Phil Fern
Location: Marple, Cheshire

Offline philf

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Re: Fitting a Multifix Aa
« Reply #9 on: February 14, 2024, 06:00:38 AM »
Dell,

I've done a bit more Googling and have found sections through the toolpost and even a photo of a spare body. All show through holes! Have you taken the top cover off to have a look?

I know this is a bigger Multifix but clearly shows the holes at the top.



Phil.
« Last Edit: February 14, 2024, 03:03:43 PM by philf »
Phil Fern
Location: Marple, Cheshire

Offline Dell

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Re: Fitting a Multifix Aa
« Reply #10 on: February 15, 2024, 04:26:11 AM »
Dell,
What sort of knurling tool are you using?
The clamp style knurling tool is far better for your lathe than the standard (one sided) type and isn't likely to move your tool post.
Phil.
It is a scissor type and the tool turned away from the headstock causing holder to turn.
Dell
PS I have got it setup in rear tool post now so shouldnít be a problem now.
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Offline Dell

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Re: Fitting a Multifix Aa
« Reply #11 on: February 15, 2024, 04:32:23 AM »

[\quote] I know this is a bigger Multifix but clearly shows the holes at the top.
Phil.
[/quote]

Yes I have taken the top off and they are definitely blind holes , it seems the larger Multifix has through holes but not small ones.
I ended up turning a pointed stud inserting it in hole squaring holder and tapping with a soft hammer and it marked it just enough for me to centre punch and drill , all back together now.
Dell
Old man but still learning

Offline philf

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Re: Fitting a Multifix Aa
« Reply #12 on: February 15, 2024, 08:40:54 AM »
Dell,
What sort of knurling tool are you using?
The clamp style knurling tool is far better for your lathe than the standard (one sided) type and isn't likely to move your tool post.
Phil.
It is a scissor type and the tool turned away from the headstock causing holder to turn.
Dell
PS I have got it setup in rear tool post now so shouldnít be a problem now.

I also use my clamp style knurling tool in the rear toolpost.
Phil Fern
Location: Marple, Cheshire

Offline philf

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Re: Fitting a Multifix Aa
« Reply #13 on: February 15, 2024, 08:42:37 AM »

[\quote] I know this is a bigger Multifix but clearly shows the holes at the top.
Phil.
Quote
Yes I have taken the top off and they are definitely blind holes , it seems the larger Multifix has through holes but not small ones.
I ended up turning a pointed stud inserting it in hole squaring holder and tapping with a soft hammer and it marked it just enough for me to centre punch and drill , all back together now.
Dell

Glad you've got it sorted!
« Last Edit: February 15, 2024, 09:09:04 AM by philf »
Phil Fern
Location: Marple, Cheshire

Offline John Rudd

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Re: Fitting a Multifix Aa
« Reply #14 on: February 15, 2024, 10:11:09 AM »
I'd just put a toolholder in and set it with a square.

I do that all the time, especially with parting and threading tools where it matters to be square on to the jobÖ
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Offline Jo

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Re: Fitting a Multifix Aa
« Reply #15 on: February 21, 2024, 03:43:49 PM »
My various Lathes have size AA, A and C Multifix toolsets.

I have never used the holes under the holder to lock the toolholder to the top slide. Can't see the point of locking them, just tighten up the nut on the centre pillar to the correct angle. I would much rather the tool/holder/post get knocked out of the way than have something else break  if it goes wrong :bugeye:

Jo
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