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| Beating steel into submission (moulding flasks) |
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| Rob.Wilson:
Hi Lads :wave: One thing has always bugged me about my foundry set up and that was the moulding flasks made form wood ,, they burn when you spill molten metal on them ::) , warp and generally fall to bits after a wile ,,,,,,,,,, so time for some steel flasks :) ,, last week i had eight lengths of 1/8" x 4" steel given ,, all about 110" long ,,,,,,, just the job me thinks to make some flasks from . Then i thought i need a bead up the lengths of steel ,so that the sand would grip to , as this it a one off job i knocked up a ruff and ready press tool from bit of off cuts . dragged my shop built press into the middle of the shop and fed the lengths of steel through the press 6" at a time When all were done ,, they were cut into 65" lengths , then all the off cuts were welded together and cut to 65" ,, this gave me enough for 6 set of flasks 12"x16". next came the bending ,, so i removed the large vice from my welding bench and tac welded 4 lengths of round bar to it , for the bending jig . The lengths were then bent round the jig ,heating the bends with oxy gear Then after they were all bent up , the over lap was trimmed off and welded up Due to the welding and bending they had a bit of a warp in them . easy fix , stuck a shim under the one of the high corners , this is to allow for the bit spring back , plonk a bit weight on the offending corners , and heat the other to . Next was to make sure they are truly flat , as some metal on the corners get raised due to hammering on the bends , a bit grinding took care of that using one of my ally core plates as a reference. Then they were paired up ,cos they aint all the same ,,,,,,,,,,, the ones i did with a hangover are slightly different :doh: Handel's and pins to follow Rob |
| Bluechip:
Strewth .... You ain't half into grunty stuff ... :bugeye: Must cost a fortune in Weetabix ... Ah well, back to me bit of 1/8" ally .... If I can manage it .. Dave BC |
| dsquire:
Rob When you get serious you don't mess around do you? Those flasks should last you a life time as well as pay for themselves in short order. Great job Rob and thanks for sharing it with us. :ddb: :ddb: :ddb: Cheers :beer: Don |
| sbwhart:
Give that lad a coconut :headbang: :headbang: :headbang: :headbang: Great bit of bashing Rob. Stew |
| Gerhard Olivier:
Rob every time I think ive seen the extent of your talents you amaze me again!!!!!! :bow: :bow::bow: Gerhard |
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