Design to print

Community General Discussions
1

I didn't do to much printing with my printrbot simple, just enough for setting everything, and now its almost perfect.

 

I designed an object with sketchup, convert to STL and load into Repetier, look great after sliced.  After the printing is done my dimension are a little bit wrong.

My object is basically a rectangle box with holes for screws and housing for a ball bearing. The ball bearing is 10.9mm of diameter, I designed it with a hole of 11mm, the result is 10.4mm.

Look like slic3r use the dimension for the middle of filament extruded (0.4mm). Do I need to take care of that in sketchup, or one parameter exist in repetier, slic3r or skeinforge to adjust that automatically ?

2

I would

print the nickel calibration print. That should let you get things set to print what you draw.

3

Each printer is different.

Each printer is different. With my Mojo, I need to allow 0.1mm on each side of an object to fit inside another object. With a Replicator 2, the required allowance is different.

You also have to account for wanting a loose fit versus a tight fit. I would print a test part, with your ball bearing housing replicated a few times, sized differently (by 0.1mm) each time. That way you have half a dozen holes to try, and the one that fits tells you for the kind of fit you’re looking for what the offset needs to be.

- Jon