tea pot - cnc cut looks like a 3D object

[stan kern]

found this tea pot design, printed the diagram and traced it using Logic Trace and created a *.dxf file for maching the file out on the CNC machine using black cherry wood and it looks 3D like cut out


https://stankern.vids.io/videos/d39fdab51f16edc15a/tea-pot-cnc-cut-looks-like-a-3d-object

[John TenEyck]

Nice project Stan. You are a braver (?) man than I to put your hands so close to the running bit. No way I ever would do that. It may be programmed to do something, but that doesn't mean it will, even if it has 100 times in the past.

John

[stan kern]

i will look at the video to remind myself what I was up to might just be an illusion

[stan kern]

towards the end i was close, worried the tea pot might lift up a bit as the tabs could have been increased
nothing worse that the work piece trying to fly out
and the camera angle does make it look worse

[David Buchhauser]

Nice looking part Stan! I often use small tabs to keep the parts from moving during the final cuts, and then use a sharp chisel to cut the part loose when finished. Thanks for sharing another great project with us.

David

[stan kern]

i have issues with tabs I pick 3d and possibly too small as when the project gets cut out my tabs are minimal and it worries me
I should stop 3d and make them a bit bigger
i did not have any projects to place on the plasma site maybe next month

[David Buchhauser]

Stan - how about using double sided tape, or that trick where you put tape on the backside of the work piece and tape on the spoil board and glue them together. Then when finished just peal off the tape. I think there was a special spray adhesive that was recommended. I'll have to look it up and post the link. In any case, your finished product looks great!! Keep up the good work.

David

[Jim Becker]

I'm with David on this...for a delicate thing, besides a few 3D tabs, using some additional "stick down" under the workpiece is a good thing. That said, you have to be a little careful not to over do it, either, if the cut pieces will be really delicate and take care when releasing them. Use a putty knife or something to very gently pry them loose so the tape releases. I'd likely use the painters tape and superglue method here rather than carpet tape because it will release easier by prying it as noted.

[John TenEyck]

I make some pretty small parts, sometimes even smaller than the ones shown in this photo.



Tabs would be problematic, so I've settled on blue tape and CA glue. As long as you make sure there is glue under your parts when you stick it down it works very well, at least with the bits, speeds, and DOC I use for this kind of part.

John

[stan kern]

will try this ---thanks