trapezing inlays

[tim]

i figured out why my inlays won't fit.

the top section does indeed fit, but as more down i cut, as wider the piece literally gets. about 0.5mm difference from top width to bottom width. the whole thing ending up trapeze shape. 


how can i fix this issue? it's going not into one direction, so i could dismiss a tiltet spindle as the source of error (?).

is it regular variance? i cut 22mm deep with the stock endmill (1/8th). i cut on 12,000 rpm with the spindle. i have a variance of roughly 0.1mm till about 60% of the depth and then it's getting wide. measure with a digital caliper. even tho they might not be dead accurate, i can clearly see it with my eye aswell.

[Hommer Woods]

Not sure why that would be happening. Can you post an image of the tool path settings for the inlay part? Curious if you have something set there that would cause it.

[tim]

attached the file. seems like i cut longer then my flute. will try tmrw again.

Attachments:

Bitcoin Bottom Inlay1.crv3d (1.08 MB)

[Hommer Woods]

Aug 31, 2018 14:03:32 GMT tim said:

attached the file. seems like i cut longer then my flute. will try tmrw again.

I can't open that as I only have the Cut2D app. Can you post a screen shot like this of the inlay path?

Attachments:

[Derek the Admin]

The router is out of plumb.

[Hommer Woods]

Aug 31, 2018 16:35:47 GMT Derek the Admin said:

The router is out of plumb.

That would make sense.

[Mototech]

I thought about the router being out of plumb, but am curious what the finished edges look like. If the top and bottom or left and right edges all are tapered out toward the bottom of the cut, I would think it's bit deflection from the cutter length being shorter than the material thickness/ cut depth. Or from incorrect speeds and feeds.

If it's out of plumb, the top and bottom or left and right edges should exhibit a shingle pattern that would become more apparent with large size cutting bits.