[andrew2]

SR100 router uses rack and pinion, could it engrave 3mm letters in alum. plate perfectly well enough?

[CJH]

You should be able to dit fine, if you slow the feed rate down to between 100 and 150 mmpm. I would lean towards 100 mmpm. we had an issue of holding accuracy on our Onsrud which has R & P on the X axis, and ball screws on the YZ. It wasn't holding near the accuracy as our TM-1 Mill. so we slowed it down and got good results.

Hope this helps

Chris

[andrew2]

Cant engrave it at all, stopped makin them.