Another shoe - 100 micron layers
Posted: Thu Feb 13, 2014 9:41 am
Everyone seems to be obsessed about getting to 5 nanometer layer heights *
This is another shoe, printed at 100 micron layer height. I sprayed a coat of grey primer/filler because I find with FDM parts it shows what they truly look like - with all defects. In this case the surface roughness is mainly due to the primer. The point I am making is unless you are making really miniature parts a reliable 100 micron layer (as opposed to the mess you usually get with FDM at 100 microns) will build a nice part. Slight projector defocus and averaging due to light spreading in the resin leads to a nicely averaged shape. Almost like you would end up with on an FDM part after sanding. It's just that the DLP process kind of does the sanding for you.
*In case anybody wants to try, I do have a working stage fitted with a 5nm encoder...
This is another shoe, printed at 100 micron layer height. I sprayed a coat of grey primer/filler because I find with FDM parts it shows what they truly look like - with all defects. In this case the surface roughness is mainly due to the primer. The point I am making is unless you are making really miniature parts a reliable 100 micron layer (as opposed to the mess you usually get with FDM at 100 microns) will build a nice part. Slight projector defocus and averaging due to light spreading in the resin leads to a nicely averaged shape. Almost like you would end up with on an FDM part after sanding. It's just that the DLP process kind of does the sanding for you.
*In case anybody wants to try, I do have a working stage fitted with a 5nm encoder...