Drag knife not making sharp corners

[jamesd256 (James Donnelly)]

Don’t worry there is no chance of me waiting for anything.

I was interested to hear if you had any ideas. I have something sketched out now and will enjoy trying to do it myself. Just don’t want to duplicate effort so if you do it first, great.

 

[barry99705 (Barry)]

@jhitesma

I would guess oscillation mostly helps when the blade starts to get dull. With a fresh sharp knife just dragging it works very well – but as it gets dull sometimes a bit of sawing motion starts to help. So I’d assume the oscillation is more a “backup” so you don’t have a big job go south if the blade gets dull partway through. That and helping production shops get the most from their tooling. Interesting that inkscape gcodetools can do tangential…I have a spare stepper sitting here…and my wife and daughter are out of town this weekend so I can focus on my projects…hmm……

Usually you’d use the oscillating cutters on thicker materials, multi-layer corrugated, or expanded pvc foam, for example. They also help with complex shapes and fine detailed cutouts.

[jamesd256 (James Donnelly)]

@barry99705

Usually you’d use the oscillating cutters on thicker materials, multi-layer corrugated, or expanded pvc foam, for example. They also help with complex shapes and fine detailed cutouts.

Do you think multiple passes will compensate for oscillation for cutting double wall card? I haven’t managed to go through it in one pass yet with the drag knife, but 2 passes seems fine.