Batman Forever
Sega, 1995You're currently viewing posts by Pinsider vid1900.
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If we had an order of around 50, I could get them cast in aluminum.
The form would need to be in 2 halves.
But, remember that aluminum shrinks after casting, so the form needs to be oversized ( I seem to remember the model needs to be oversized 1.12) and because it would be a sand casting, you loose a little of the dimensions to polishing.....
Quoted from Taxman:Does the sand casting preserve threads or does it leave an undersized hole to screw into?
No threads at all will be preserved.
The sand will leave a depression that will show you where to complete the hole with a drill bit, and then run a tap through it for threading.
Quoted from Ed_in_Texas:Hopefully Paul (the OP) hasn't put too much work into CAD design and 3D printing these now that his thread has been high jacked and is now a metal handle preorder thread by someone else.
Sorry Paul.
No, you are missing the entire point.
Paul's CAD design is REQUIRED to make a metal handle.
He would need to enlarge the design to offset the metal shrinkage.
He would need to 3D print both halves of the form.
He would need to supply the CAD drawing for any milling required after casting.
Don't try and sell Paul short, nothing is able to happen without him.
Quoted from Wizcat:I wouldn't use a 3d print as a basis for a mould though. 3d printing (as Paul said) can be very ridged and will not give a smooth finish.
Depends on the printer.
My clients use them and there are no ridges, but they did not pay $399 at Makerfaire for their 3D printers.
Tiny ridges would be obscured by the "sandblast" finish of a sandcasting
aluminum_pistol_casting_before_cutting_sprue_and_riser_(resized).JPG
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