New Furnace Build ,,, Cupola

[RotarySMP]

Call me a stalker, but madmodder.net has a search function - all post by user. I looked at all the pictures you have ever posted to MadModder Rob, and am truely impressed at the quality of your work.

Thanks for sharing your skill and knowledge.

[Rob.Wilson]

BLUSH Thanks RotarySMP

Do you do any casting ? 


Rob

[RotarySMP]

A little. Started about a year ago. I have a little A5 furnace built to Anon (www.alloyavenue.com mpderator) design.

My casting so far are here: http://s1124.photobucket.com/albums/l579/rotarysmp/

Just a raw beginner.

[Rob.Wilson]

Looks like your off to a good start , motor mount looks good and solid 






Rob

[RotarySMP]

Hi Rob,

Not sure it is a good idea posting photos of my work in your threads. The casual oberver might think its from you, and that you have lost your touch.   Your reputation is at stake

People already suspect you have issues milling out square...



I don't mean to highjack your cupola thread, but when I machined my two motor castings, I drilled through the hinge axis with a long (~200mm long 6mm drill). Even with center drilling, I ended up with the axis alittle squewed off. You can see in the tensioning widget, that things didn't line up very well.

How would you have gone about that?

[Rob.Wilson]

No worries , the cupola build has stalled for now due to other jobs 

I would have marked each lug out and drilled them individually ,from either side .



Rob

[RotarySMP]

Thanks. I was trying to avoid that, guess it would have been the better of two unattractive options.

[ironman]

Good to see that someone is going to build a cupola. I have had years of experence in running one (9" dia). they can be very temperamental furnace to run so If you need help I can help.

[Rob.Wilson]

Good to see that someone is going to build a cupola. I have had years of experence in running one (9" dia). they can be very temperamental furnace to run so If you need help I can help.

I probably will not get this project finished until next  year ,so many other shop jobs  , when i get stuck and i probably will , I will give you a shout .


Rob

[Mayhem]

Bugger - I only joined up to see this build 

[Rob.Wilson]

Bugger - I only joined up to see this build 

    I was actually looking at the furnace last night  ,,,,,,thinking I may do a bit work on it now that the weather has improved a bit , have a break from the 626 project .

Just looked its been two years since I started the build ,,,,,,,,,fook me I am slow 

Rob

[awemawson]

Never mind Rob, my 100kW Induction Furnace and my Propane Furnace are still not unpacked from moving here 5 1/2 years ago I'm ashamed to say !

[vtsteam]

It  has been raining here for 3 days but there was enough of a pause late today for me to cut up some 1/2" rebar and make up 2 botting irons and 2 tapping bars.

Better hurry Rob or I'll be the first to watch slag dripping out of my cupola into a pouring ladle! 

Puttin on the pressure, uhhuh, uhuh

[tekfab]

,,fook me I am slow 

Rob

Thats not what your wife told me                                                            

[Rob.Wilson]

It  has been raining here for 3 days but there was enough of a pause late today for me to cut up some 1/2" rebar and make up 2 botting irons and 2 tapping bars.

Better hurry Rob or I'll be the first to watch slag dripping out of my cupola into a pouring ladle! 

Puttin on the pressure, uhhuh, uhuh

   Steve you win   

I still have bott sticks , pokey stick  , blower , crucible poring shank and the furnace to finish 

Better go and look for a motor for the blower ,,,,,,,or I will be hand cranking   


Rob

[vtsteam]

Ah, well Rob, I've got the drop door to do, the lid to line, lid lift and swivel mechanism, pouring shank, ladle, pig molds to weld, as well as make up some iron sand. So false bravado, here! 

[Mayhem]

c'mon you two - less talking and more action (with pics - lots of pics)!

[Rob.Wilson]

Here we go 

After spending most of the weekend sorting out my workshops , had to take advantage of the good weather , I managed to drag  the furnace into the fab shop , it was a bit of a fight , big spiders and the ivy had grown over it 

First job was to remove the centre form .

before.


After ,


then a bit work to the stand ,I noticed this had a fare bit of spring in the legs when I was dragging it into the shop and the corners of the box section were also digging into the flags .
So some tubing was added to brace the legs , nice a stiff now . Some 4 inch bar was sliced up to make feet .I rounded the edge so they would slide easier.




these were then welded to the bottom of the legs .


still a bit work to do to the stand .




I better move my arse as Steve has had fire in his furnace 

Rob

 
 

[vtsteam]

Woohoo!

That is one impressive cupola. 

Mine did come along a little faster.

Just like a fire in a dustbin is faster to prepare for than constructing a convection oven for a pastry chef.

Any time you want to trade, Rob, just let me know!

[doubleboost]

Looking good Rob
The legs wont be flexing now 
John

[krv3000]

can rost sum nuts with that rob well dun

[vtsteam]

can rost sum nuts with that rob well dun

LOL, LOL!

Lets hope not....

[Rob.Wilson]

Thanks Lads 

Only had an hour in the shop tonight so I decided to make the shoot ,were hopefully molten iron will flow from .

So I grabbed an off cut of 100mm box .


Set it at an angle I was happy with and marked both sides with chalk .



A couple of minutes with an angle grinder .



so I now had a shoot shape .



I decided to bend out the sides using a 2ft adjustable.

 

Once I was happy with the angle , mark one eye ball .

 

I needed to bend the other side the same , the original measurement between the walls was 90mm

 

I had bent the first side out 20 mm



so all i had too do was bend the other out until the gap was 130mm



then both would be bent equal , well close enough for this job.

the bit scrap that was cut from the box previous was re welded in at the front for the shoot to form a lip.






The shoot was then welded to the drop bottom .







would have took me 40 minutes if I did not stop to take photos 


Cheers Rob

[hermetic]

Superb piece of work, Get yersen a broon!
Phil.

[tekfab]

Is this an Australian Cupola ?