I've gone through 2 of the 2LInc engravers.
One died in a nasty crash, and the other is worn now.
You can search PMM for my, and other reviews of the 2Linc engraver.
They work well if you don't push them too much in SS or hardened steel, and keep the cutter projection low.
One caveat: program with no dwells anywhere. Keep your plunge feed to about 250IPM, and your side feed to 10-20ipm.
We used them to engrave the pockets on the backside of putters. Unfortunately, we had to use a 3/16" engraving tip, hanging out about 1.4"
That proved to be too much radial load for the tool to stand up over the long haul.
The tool now has noticeable radial play. (.005-.010") at .5" out from the small collet.
That's too much to try to use anything but a "Tuff Tip" on most material.
I still use it for engraving ATF-NFA required info on Saiga 12G SBR's and the like, but the base material is just stamped sheetmetal so it will work
well enough.
It works (worked) great on aluminum (anodized or bare), and even on glass with the diamond tip.
Be careful not to engrave too far off center when doing round work, and MAKE sure you plunge on the material, and not let it drop off the side/edge.
Some of our logos would run right up to the edges of the chamfer on the OD of the parts. That (more than
anything) is probably what killed our 2nd tool.
I have scoured the board and came up with one post where a guy designed/built his own. It looked nice.
Here is one, and I know that on CNC Zone there is another design.
FYI, the drawing below is credited to PMM member DMF_TomB.
I've thought about using a endmill Ø1/2" holder/ extension, and a ER11 collet extension with a cross drilled hole for a pin/ slot configuration.
Just haven't had the time to build it yet.
Doug.