Thursday, August 27, 2009
-vertical holes for M3, M4, M8 screws
-vertical hexagons suitable for M3, M4 M8 nuts
-horizontal teardrops M3, M4 M8 and hexagons for suitable nuts
-sharp edges with angles of 15, 30 and 45 deg
-thin walls 0.5mm, 1,0mm, 1.5mm and 2mm horizontally and vertically
-stair effect at sloped walls with angles of 15, 30, 45, 60 and 80 deg
-round corners, radius 4mm to 16mm
-gear teeth with 2mm wide teeth
-in addition to this, you can also check perpendicularity and parallelism of your printed objects, which were the general intentions of designing a benchmark.
You can download both the STL and the AoI file from SourceForge
Printing it took about two hours, so why not watching a fancy movie while your RepRap prints its benchmark.
The very first version included a complete horizontal hexagon for M8 nuts, but apparently this made the object to big in height, so I just cut it off, leaving just a small offset ;)
The gear teeth were not built as expected but as a round corner with a bubbled rim. I am also missing the 0.5mm thin walls. The 1.5mm walls consist of only two parallel strings and are not solid, there is a small gap between them in both directions.
I have also noticed that walls between 2W and 3W, where W is the filament width do not get filled because the gap between is less than W. It would need a pass with reduced filament feed rate to fill the trench.
Could you put it on Thingiverse please. Then people would be able to upload there copies of it so we can compare results.
Please do post it on thingiverse.com
SVN is also a good place, but thingiverse is even more accessible.
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