Holley 4150 style Carburetor spacer for casting
thingiverse
This model is designed to be cast in aluminum using green sand. I've left out the scaling for shrinkage, but aluminum typically shrinks by about 6%, so I will apply a scaling factor of 1.06 when exporting from Cura. Plan on milling the surfaces and adding holes on the mill. My original design stands at 1.5 inches tall, but you can scale it to your liking by adjusting the Z axis in your printing software. A draft has been intentionally added for easier demoulding - this model prints best with the larger surface facing downwards, much like building a sandcastle. EDITS 3/9/18 - Revision 1: Additional draft added 9/14/18 First casting attempt resulted in a rough surface and porosity; will try again
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