Quote:
Originally Posted by jaeger6
I am casting these emblems (see below) and I am trying to come up with a time effective way of sanding the face in preparation for polishing. Currently, for the sample parts, I am simply sanding them with sand paper on a flat steel table. Works well but is very time consuming. It's quite important that the face be sanded as flat as possible with very minimal "diving off" of the the sharp corners.
So, I am looking for a powered alternative. I have been considering a belt sander, or one of those rubber expander wheels
The sanding belt has the draw back of how to hold onto the part while sanding. The part is only .170 thick.
Do you think the expander wheel, with the proper technique is capable of not rippling the surface?
Any other suggestions?
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i woud go with the belt sander.
different options for holding it .
when casting th part i it possible to leave some kind of a holding point in the back .something that could be quickly ground or cut off after the sanding .
or using a flat rectangular piece of wood about 1/4 inch larger than the emblem make a frame around the four sides that will extend about .125
put your emblem face down on the belt sander put that frame on top of it
and start the sander , the framed sides will hold the part and give you .045 free space to remove material
