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[magicniner]

I made a BT30/ER11 drag engraving tool holder last week




Ingredients List -
A BT30 10mm Endmill Holder
An ER11 chuck on 10mm shank turned to length and with a slot milled in the side for combined retention, rotation prevention and travel limit by the BT30 Endmill Holder's grub screw (screw adjusted to just allow vertical float)
One spring
A diamond drag engraving cutter from my Gravograph IM3 pantograph machine
A dash of low strength Locktite for the Endmill Holder retaining screw.
A drop of Way Oil on the ER11 collet chuck's 10mm shank

[Neale]

I made a BT30/ER11 drag engraving tool holder last week

Don't know much about drag engraving but curious about it - does the engraving tip not need to turn to follow the direction of drag? Or is the tip shaped to cut in any direction? Or does it have a swivel in it?

[magicniner]

Don't know much about drag engraving but curious about it - does the engraving tip not need to turn to follow the direction of drag? Or is the tip shaped to cut in any direction? Or does it have a swivel in it?

No.
Diamond Drag Engraving is entirely unrelated to Drag Knife, the Diamond tip is conical, in no way directional and is not required to rotate at all.

This is a quick test to ensure it works as designed, lettering is 5mm high

[Neale]

No.
Diamond Drag Engraving is entirely unrelated to Drag Knife, the Diamond tip is conical, in no way directional and is not required to rotate at all.

This is a quick test to ensure it works as designed, lettering is 5mm high

Thanks, Nick - my interest is a bit more towards drag knife work (and I'll get one of those set up on my machine one day) but it's always interesting to see the art of the possible, especially with relatively simple bits of kit. Nice job, especially remembering the size of the lettering. What's the material you were cutting?

[Kitwn]

Thanks, Nick - my interest is a bit more towards drag knife work (and I'll get one of those set up on my machine one day) but it's always interesting to see the art of the possible, especially with relatively simple bits of kit.

Yet another rabbit hole we've been down is screen-printed T-shirts and bought a Zing Air machine which uses a small drag knife for cutting out the stencils. It comes with the approriate design/control software.

https://www.youtube.com/watch?v=39t_R98CdZA