Wacko gear backlash (or not)????

[IQChallenged]

The most expedient way of asking my question is to ask you to visit my site and read the first article regarding "making some gears". Something just doesn't make sense (to me). http://projectcnc.wordpress.com/

[ger21]

Looks like a goofy gear, but hard to say for sure without seeing the .dxf

Also, I'd recommend using a free CAD program vs Sketchup. It's very possible that Sketchup is saving the size incorrectly. I'd recommend ProgeCAD Smart.

http://www.progecad.com/compra/index...age=1&lang=eng

[IQChallenged]

[QUOTE=ger21;402947]Looks like a goofy gear, but hard to say for sure without seeing the .dxf

Here's the dxf straight from traceparts

[IQChallenged]

Looks like a goofy gear....

I'm glad to hear you say so. Some times I think I just don't look at things right.

[ger21]

I looked at the .dxf, and it looks like your results are correct. And the diameter at the tip of the teeth is about 16.063.

[IQChallenged]

I'd recommend using a free CAD program vs Sketchup.

I've known all along that SketchUp MIGHT be throwing me some curve balls since it doesn't even pretend to be a CAD program. But you know how it is. You get used to something and hate to climb a new learning curve. But thanks for the suggestion. I'll definitely check it out.

[IQChallenged]

I looked at the .dxf, and it looks like your results are correct.

That's good news. Furthermore I downloaded a different gear and SketchUp faithfully handled it. I think it's good to establish whether the program is worthy for the CNC hobbyist as a CADlike utility. I'm still gonna look at the freebie CAD you suggested.