3D printed drag knife

My first go at a drag knife. I have to work on cutting paths and other details, but it seems to work well enough. I’m able to use the touch probe and standard utility knife blades. There isn’t much room below or in front of the Z carriage, so I may modify this to use a smaller blade so it won’t crash. For the time being, I’ll ensure the clearance, retract, and feed heights are well below. I’m using Fusion 360 and am considering purchasing an extension to modify the gcode to include the offset loops that Aspire and others do.

I thought to share. Please drop tips and learnings from your drag knife journey.

_Mike





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These are the offset loops I mentioned above. This is what a square looks like for a knife with a .125” offset. I hope it makes sense.


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Version two complete. It now clears the z carriage and no worries about crashing. My only rub is I have to cut the blades in half but it’s no big deal.

Oh and I purchased and downloaded a drag knife extension for Fusion 360 and it’s amazing. Well worth it.

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Great project. Thank you as well for sharing the F360 option. I have been learning to use the software since purchasing my 3D printer a few years ago, and now with the 1F, am moving on to the CAM side of things.
Would you be willing to share a few screen shots of the relevant F360 drag knife ‘plug-in’ windows that illustrate how it works/the new parameters that are available for setting up cuts? No problem if not as I know how time consuming this can be.

@TMToronto, here’s a link to the extension I purchased. It has a good video showing how to use it and instructions on installation.

I hope this helps!

_Mike

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Super - thank you for the link.

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