View Full Version : Matching male and female parts
magic
02-08-2010, 01:21 PM
If a male then a female part are cut using the climb direction - -the one part would be cut clockwise and the other counterclockwise.
Depending on slop and backlash the parts will be different. Maybe we should be cutting males conventionally and females in a climb direction, so the parts fit together better. Anyone else think like this?
loriny
02-08-2010, 06:54 PM
I could be wrong but my thought would be to cut all parts conventional as the bit seems to flex away with a climb cut. Most of my parts I bo a climb and then cut the last few thousandths in a conventional direction the same as I do my cabinet parts. I find the results better and the vacuum hold down has an easier time holding the parts.
lorin
woodworx
02-08-2010, 09:54 PM
J-man
On your last pass through on the male part use the offset allowance in Artcam to reduce your size. Run the profile with your original vectors that you used to create your female pocket. Don't resize the vectors manually to create your male part. The male part will be resized during the toolpathing step. I have gotten them to fit nice with -.001" final pass offset located in the profile toolpath function, but you don't have to go that tight. You can run the cut direction in either mode, just set your last pass thickness to .01 to .05" to take bit deflection and backlash out of the equation. This toolpath technique can be used in any software, not just A.C.
7274
khaos
02-09-2010, 10:48 AM
I see why Magic would say one way for ale and the other for female. The female is cut from the top and the male is cut from the bottom. So when you flip & deposit the male side they have both been cut the same. That makes sense to me.
Is that what you meant?
magic
02-09-2010, 12:11 PM
Yes Joe that's part of it. The parts I fit are tighter then 001, I need a mallet to put them together.
I was "speaking" theoretically - if the machine is not 100 percent tight then the gantry/car would travel silghtly differently in con vs climb.
navigator7
02-09-2010, 07:12 PM
Do a test with a climb on one side and a conventional on the other?
I'm still in shock people are talking in thousandths with wood.
;-)
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