Re: Thinning STL files

From: Bill Noack (
Date: Thu Feb 06 1997 - 18:56:21 EET

> -- [ From: Al Hastbacka * EMC.Ver #2.5.1 ] --
> I recently received an STL file that was 176 Megabytes long (ASCII) and
> had 626,000 facets. The physical size of this part was a cube with 2 mm
> sides (with lots of detailed internal structure).
> My question is "Has anybody on the list used or created a utility
> program that allows inputting of an STL file and outputting of a thinned
> (reduced number of facets, but still retaining most of the details) STL
> file?
> Regards,
> Al Hastbacka


Imageware's RPM will reduce the polygon count on an stl file. We use
this periodically when we receive files that are more refined than
necessary. It helps the slice time and support building time with these
larger files. The inputs in RPM are a "surface" deviation parameter and
an angle deviation parameter. You can play with these to get the size
file you need. It works pretty much as advertised.


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