I was wondering what the right way is to handle tool changes for the cnc tool head For reference I am using a snapmaker 2.0 A250 and Fusion 360. I am post processing the tool paths into separate .cnc files for each time I need to change the tool. My main question is what is the best way to set th…

[image] Some info on cnc tool changes and combo cnc/laser projects Snapmaker 2.0 @brent113 asked me a few questions about my process for cnc & laser. It was in response to some of the pieces I’d posted in this thread: Multi tool projects We thought it would probably be go…

See the post @sdj544 references. That has a lot more tips. Including answers to the questions you ask. [image] fhogan: My main question is what is the best way to set the Z axis work origin for the second or third etc. file (since some of the material has already been milled away so you cant se…

You could use a post elsewhere on the board to set the Z height. Put your stock material on the board Set origin including the Z height. Out of the way of the stock screw in a flat head screw post into the base board. Move the head without changing the Z height to the screw and screw up so it t…

Why bother with such a complex setup? Often there is a spot of your stock that is not milled away somewhere that can be used for z-height at all times. If not set your z-origin at the bottom of your stock. You can set your x, y and z-origin all separately if you want. You do need to be careful t…

[image] brvdboss: Often there is a spot of your stock that is not milled away somewhere that can be used for z-height at all times. Or a spare piece of stock of the same height off to the side. -S

Both options are good but using a post is easy, the explanation way exceeds the effort. :smiley: If you surface your complete piece of stock and dont have an off cut or dont want to go to the effort of securing that offcut and using exactly the same process detailed above to set the Z height, it wo…

@sdj544 Thank you so much all of this advice was very helpful. I had three questions about the way you do this. You mention that if the origin will be milled away to use some other part of the stock (which wont be milled away) to set the Z origin height. I think thats a perfect way to set the Z …

You can set any of the origins separately at any point. If my wood isn’t flat and I’m worried about it (I need a flat part to remain) then I do a milling pass to flatten it before I do anything else. (And/or I’ve already milled my wasteboard (or a piece on top of it) so I know it’s flat.) After th…

@sdj544 That all makes sense. I didn’t realize you could set the origins separately, will check that out. Being able to set the origins separately would then allow the user to find a point that never gets milled and use that to consistently set the Z axis properly for every pass- thats perfect. Im…

[image] fhogan: Given all of that is there any reason to need to pre-flatten the wood, or can I just set the origins as you described and start with my first cut without pre-flattening? No, as long as you have a consistent spot to calibrate your z-height for changing bits if required. If you …

Cnc tool changes

Snapmaker 2.0 (3-in-1)

sdj544 February 1, 2021, 5:57pm 2

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Cnc tool changes

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