# Tricks to cope end of a tube **URL:** \ **Category:** CAM\ **Created:** [June 26, 2025, 12:40am UTC](https://forum.grid.space/t/tricks-to-cope-end-of-a-tube/2598 "2025-06-26T00:40:00Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![meddesign](https://forum.grid.space/letter_avatar_proxy/v4/letter/m/d6d6ee/32.png) [@meddesign](https://forum.grid.space/u/meddesign)\ **Post date:** [June 26, 2025, 12:40am UTC](https://forum.grid.space/t/tricks-to-cope-end-of-a-tube/2598/1 "2025-06-26T00:40:00Z")
not getting best way to cope end of tube or even just do partial machining of any stock (machine just one side) seem like the tool path wants to machine out the whole item not just the path desired. [workspace (5).kmz](https://forum.grid.space/uploads/short-url/4vd1vAWXPKL1FCp0eFZncF7G1Ca.kmz) (223.9 KB) ---
**Author:** ![stewart](https://forum.grid.space/user_avatar/forum.grid.space/stewart/32/21_2.png) [@stewart](https://forum.grid.space/u/stewart)\ **Post date:** [June 26, 2025, 12:48am UTC](https://forum.grid.space/t/tricks-to-cope-end-of-a-tube/2598/2 "2025-06-26T00:48:15Z")
is this the area you’re trying to mill in isolation? ![Screenshot 2025-06-25 at 8.47.38 PM](https://forum.grid.space/uploads/default/original/2X/2/24c1ee4efba71954f4754ec16a987f4c3211a7c7.jpeg) ---
**Author:** ![meddesign](https://forum.grid.space/letter_avatar_proxy/v4/letter/m/d6d6ee/32.png) [@meddesign](https://forum.grid.space/u/meddesign)\ **Post date:** [June 26, 2025, 12:49am UTC](https://forum.grid.space/t/tricks-to-cope-end-of-a-tube/2598/3 "2025-06-26T00:49:30Z")
yes just the end of the tube…called a cope where one tube mates with another ---
**Author:** ![stewart](https://forum.grid.space/user_avatar/forum.grid.space/stewart/32/21_2.png) [@stewart](https://forum.grid.space/u/stewart)\ **Post date:** [June 26, 2025, 12:52am UTC](https://forum.grid.space/t/tricks-to-cope-end-of-a-tube/2598/4 "2025-06-26T00:52:06Z")
it’s a really fine detail. not sure I have a good answer for that right now. but i’ll play with it. ---
**Author:** ![meddesign](https://forum.grid.space/letter_avatar_proxy/v4/letter/m/d6d6ee/32.png) [@meddesign](https://forum.grid.space/u/meddesign)\ **Post date:** [June 26, 2025, 12:56am UTC](https://forum.grid.space/t/tricks-to-cope-end-of-a-tube/2598/5 "2025-06-26T00:56:14Z")
a ball endmill or if I rotate it square the side of the cutting tool with a normal endmill will handle it close enough however I do not know how to isolate only the path I want ---
**Author:** ![stewart](https://forum.grid.space/user_avatar/forum.grid.space/stewart/32/21_2.png) [@stewart](https://forum.grid.space/u/stewart)\ **Post date:** [June 26, 2025, 1:10am UTC](https://forum.grid.space/t/tricks-to-cope-end-of-a-tube/2598/6 "2025-06-26T01:10:23Z")
do you want to do a roughing pass but constrained to the end? or something like this? [tube-end-cut.kmz](https://forum.grid.space/uploads/short-url/MqecCu7540SbK1svCNY8BFHIQ7.kmz) (1.2 MB) ![Screenshot 2025-06-25 at 9.07.34 PM](https://forum.grid.space/uploads/default/original/2X/b/b59849e6b1fa08ffdda259aead444f81312e677f.jpeg) ---
**Author:** ![meddesign](https://forum.grid.space/letter_avatar_proxy/v4/letter/m/d6d6ee/32.png) [@meddesign](https://forum.grid.space/u/meddesign)\ **Post date:** [June 26, 2025, 1:54am UTC](https://forum.grid.space/t/tricks-to-cope-end-of-a-tube/2598/7 "2025-06-26T01:54:16Z")
that would be great yes ---
**Author:** ![meddesign](https://forum.grid.space/letter_avatar_proxy/v4/letter/m/d6d6ee/32.png) [@meddesign](https://forum.grid.space/u/meddesign)\ **Post date:** [June 26, 2025, 2:03am UTC](https://forum.grid.space/t/tricks-to-cope-end-of-a-tube/2598/8 "2025-06-26T02:03:20Z")
I loaded your file and the g code output or animation are not working G21 G90 M30 ---
**Author:** ![meddesign](https://forum.grid.space/letter_avatar_proxy/v4/letter/m/d6d6ee/32.png) [@meddesign](https://forum.grid.space/u/meddesign)\ **Post date:** [June 26, 2025, 2:05am UTC](https://forum.grid.space/t/tricks-to-cope-end-of-a-tube/2598/9 "2025-06-26T02:05:16Z")
> [@stewart](#): > > constrained to the end is that a trick or software switch somewhere ---
**Author:** ![meddesign](https://forum.grid.space/letter_avatar_proxy/v4/letter/m/d6d6ee/32.png) [@meddesign](https://forum.grid.space/u/meddesign)\ **Post date:** [June 26, 2025, 2:12am UTC](https://forum.grid.space/t/tricks-to-cope-end-of-a-tube/2598/10 "2025-06-26T02:12:02Z")
I now am getting something when selecting the face…sorry about my ignorance will get back to you ---
**Author:** ![meddesign](https://forum.grid.space/letter_avatar_proxy/v4/letter/m/d6d6ee/32.png) [@meddesign](https://forum.grid.space/u/meddesign)\ **Post date:** [June 26, 2025, 2:16am UTC](https://forum.grid.space/t/tricks-to-cope-end-of-a-tube/2598/11 "2025-06-26T02:16:28Z")
works …Thank you I have lots to learn ---
**Author:** ![meddesign](https://forum.grid.space/letter_avatar_proxy/v4/letter/m/d6d6ee/32.png) [@meddesign](https://forum.grid.space/u/meddesign)\ **Post date:** [June 26, 2025, 8:14pm UTC](https://forum.grid.space/t/tricks-to-cope-end-of-a-tube/2598/12 "2025-06-26T20:14:57Z")
I tried to cut this today and although the animation and my control showed the proper tool path the machine cut the item in the original orientation of the Onshape position…so it appears that the rotation option in Kiri did not fully work in x rotation… screen shot of original Onshape and kmz and nc files ![Screenshot 2025-06-26 160740](https://forum.grid.space/uploads/default/original/2X/5/5c98153b26b136510df6ddd63b2bb5852f840721.png) [workspace (10).kmz](https://forum.grid.space/uploads/short-url/ogkGR5Otegyexj7ihAB6Rgd27aP.kmz) (171.8 KB) [cnc-020.nc](https://forum.grid.space/uploads/short-url/uby8G4Q9gG6wLjjgRYCxXbs0Toa.nc) (190.8 KB) ---
**Author:** ![meddesign](https://forum.grid.space/letter_avatar_proxy/v4/letter/m/d6d6ee/32.png) [@meddesign](https://forum.grid.space/u/meddesign)\ **Post date:** [June 26, 2025, 8:19pm UTC](https://forum.grid.space/t/tricks-to-cope-end-of-a-tube/2598/13 "2025-06-26T20:19:52Z")
![IMG_20250626_161715](https://forum.grid.space/uploads/default/original/2X/2/2bfcbae7dc75de25803239eaaae3fa9bf3a6eb24.jpeg) easy fix but thought you might want to know ---
**Author:** ![stewart](https://forum.grid.space/user_avatar/forum.grid.space/stewart/32/21_2.png) [@stewart](https://forum.grid.space/u/stewart)\ **Post date:** [June 26, 2025, 8:24pm UTC](https://forum.grid.space/t/tricks-to-cope-end-of-a-tube/2598/14 "2025-06-26T20:24:24Z")
the animation disagreed with the final cut on the cnc? did you use a tool that matched what you setup in Kiri? ---
**Author:** ![meddesign](https://forum.grid.space/letter_avatar_proxy/v4/letter/m/d6d6ee/32.png) [@meddesign](https://forum.grid.space/u/meddesign)\ **Post date:** [June 26, 2025, 8:45pm UTC](https://forum.grid.space/t/tricks-to-cope-end-of-a-tube/2598/15 "2025-06-26T20:45:51Z")
the file I send shows 1/8 end mill which is what I used…the original in onshape was rotated 90 after loaded in Kiri …it showed correct in the rotated Kiri anamation but cut in the original 90 degree position from onshape…not sure I am making fully sense but I will rotate the part in onshape to be parallel with the top plane and see if it takes care of the problem if that works then it certainly is an easy fix on my end ---
**Author:** ![meddesign](https://forum.grid.space/letter_avatar_proxy/v4/letter/m/d6d6ee/32.png) [@meddesign](https://forum.grid.space/u/meddesign)\ **Post date:** [June 26, 2025, 9:02pm UTC](https://forum.grid.space/t/tricks-to-cope-end-of-a-tube/2598/16 "2025-06-26T21:02:31Z")
I think I might have had my zero in the wrong place at corner of stock rather than the center of the cut…duh ---
**Author:** ![meddesign](https://forum.grid.space/letter_avatar_proxy/v4/letter/m/d6d6ee/32.png) [@meddesign](https://forum.grid.space/u/meddesign)\ **Post date:** [June 26, 2025, 11:07pm UTC](https://forum.grid.space/t/tricks-to-cope-end-of-a-tube/2598/17 "2025-06-26T23:07:49Z")
that was it but still had a problem in that I would have preferred the tool start at the top rather than plunging to the bottom of the tube…is there a software setting I can hit to for that ---
**Author:** ![meddesign](https://forum.grid.space/letter_avatar_proxy/v4/letter/m/d6d6ee/32.png) [@meddesign](https://forum.grid.space/u/meddesign)\ **Post date:** [June 26, 2025, 11:11pm UTC](https://forum.grid.space/t/tricks-to-cope-end-of-a-tube/2598/18 "2025-06-26T23:11:45Z")
I think offset of the zero to the top of the cut may have solved that issue ---
**Author:** ![meddesign](https://forum.grid.space/letter_avatar_proxy/v4/letter/m/d6d6ee/32.png) [@meddesign](https://forum.grid.space/u/meddesign)\ **Post date:** [June 26, 2025, 11:28pm UTC](https://forum.grid.space/t/tricks-to-cope-end-of-a-tube/2598/19 "2025-06-26T23:28:49Z")
where as the cutter does start at the top of the tube as it moves toward the cutter path at the bottom of the tube it plunges down so that I am cutting almost full depth…where as it would be better if I had only .01 thousand step down…is there a way to do that or do I have to trick the software with an aux part ---
**Author:** ![Matti\_Juntunen](https://forum.grid.space/user_avatar/forum.grid.space/matti_juntunen/32/2349_2.png) [@Matti\_Juntunen](https://forum.grid.space/u/Matti_Juntunen)\ **Post date:** [June 27, 2025, 9:07am UTC](https://forum.grid.space/t/tricks-to-cope-end-of-a-tube/2598/20 "2025-06-27T09:07:05Z")
[workspace\_cope.kmz](https://forum.grid.space/uploads/short-url/m4AOMrKYfbTk4ISvykGuIQJl2nq.kmz) (569.4 KB) Add a roughing pass. Ignore all my numbers. I dont understand imperial in this context, so i just put sthing in there. [Next page](https://forum.grid.space/t/tricks-to-cope-end-of-a-tube/2598.md?page=2)