I am designing in inches and cannot see how to define a radius in 1/128th inch increments. 1/128th inch is almost exactly 0.2 mm, which is the resolution of my printer. The radius pop-up box only allows denominators up to 64. When I zoom way in and drag a radius out or in, the radius seems to grow and shrink in 1/256 inch increments but the measure shown is never finer grained than 1/64th inch. Is there some workaround? Did I miss a setting somewhere?

Many thanks.

Iâ€™m pretty sure that you can toggle back-and-forth between millimeters and inches and it doesnâ€™t change the dimensions of what youâ€™re making. So letâ€™s say you build your initial object in inches and then you transform into millimeters and set the radius and then transform it back into inches, I think you might get what youâ€™re looking for. I was doing this on one of my first projects and it seem to work.

I hate to be â€śthat guyâ€ť but can you just switch everything to metric? Life is Sooooâ€¦ much easier that way. Fractional math is far more difficult and error prone, and as youâ€™ve already discovered, even entering fractions in the first place is a PITA.

Iâ€™m an amateur woodworker, and even though most lumber (in the USA anyway) is mostly available in Standard Imperial measurements, it is still much easier design in metric. Youâ€™d be surprised how quickly you can learn to visualize in mm/cm instead of inches/feet. And I can pretty much guarantee that youâ€™ll make less errors when you donâ€™t have to add/subtract/multiply or divide fractions.

Shasti and Steve - thanks for your good suggestions. I learned a few more things about Shapr3d from you, which is always fun.

To Shastiâ€™s point: I tested the toggle and it does not change dimensions, as you thought to be the case. So to make a circle with a radius that is 1/128th more than 1/8th I can change the view to millimeters and add 0.2 mm to the radius. When done this still shows 1/8th as the radius in Fractional view but shows 0.133 inches in Decimal. Not as easy as selecting a denominator of 128 from the pop-up, but it works. Even easier - I could switch to the Decimal inches view and add .008 to the radius. (approx 1/128th) I had not thought of that until reading your comment.

To Steveâ€™s point: metric would be much simpler but my parts have to accommodate client components measured in Imperial units (1/4" bolts, 1" OD tubing, etc.) with a wee bit of margin for error. I could still do all the design in metric and no one would be the wiser (the slicer uses millimeters) but Iâ€™d be forever doing the numbers in my head during design.

So I think in the near term when I need a 1/128th margin I should just change to Decimal inches and add 8/1000ths. Problem solved until thereâ€™s a 128 option for fractional denominators.

Thanks again for your comments, and stay healthy. **MUCH APPRECIATED**