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CNC Scribing
- Thread starter drcoelho
- Start date
- Replies 15
- Views 1,829
Mike1974
Diamond
- Joined
- Nov 5, 2014
- Location
- Tampa area
Not familiar with that brand. We use these alot. https://www.mscdirect.com/product/details/01787084
Run about 9k, .003" deep, feed about 10ipm for serial engraving (aluminum and brass mats)
Run about 9k, .003" deep, feed about 10ipm for serial engraving (aluminum and brass mats)
plastikdreams
Diamond
- Joined
- May 31, 2011
- Location
- upstate nj
We use a #2 center drill for engraving and scribing...works well.
eKretz
Diamond; Mod Squad
- Joined
- Mar 27, 2005
- Location
- Northwest Indiana, USA
Looks like the O.P. item is a carbide drag engraver. Basically just a sharpened spring loaded carbide point that's dragged through the work. Good for very fine shallow lines. Not so much for deeper stuff. They also make diamond tipped ones.
I'm not wedded to the TapMatic product, just looking for best practices for scribing and suggested tooling.
To what end result ?
Cutting letters/words on machine parts.
This is getting to be like pulling teeth....
1. Material ?
2. Depth of cut ?
3. Shape of cut ?
eKretz
Diamond; Mod Squad
- Joined
- Mar 27, 2005
- Location
- Northwest Indiana, USA
Those drag engravers are only good for a few thousandths depth max on harder materials. If you want to cut deeper lettering and such, I'd go with a single flute engraving cutter as posted by Mike above or you could try the small center drill, I haven't used that one personally. I have used the single flute cutters with a pantograph engraver, they work very well. Keep in mind that a single flute cutter is generally rigidly held in the spindle, so if your surface to be engraved isn't flat that will cause your depth to vary. They might have a spring loaded version of those with the depth limiting nose that will work okay on uneven surfaces, not sure.
Kyle Smith
Stainless
- Joined
- Apr 25, 2008
- Location
- Helmer, Indiana, USA
3/64"⌀ ball endmill works well too.
BugRobotics
Stainless
- Joined
- Jun 22, 2015
- Location
- Denver, CO
I prefer the radiused engravers. The sharp pointed engravers work well but I prefer the look of the rounded bottom and their radiused kin last a bit longer in tougher materials. Harvey makes some nice options (Engraving Cutters - Tip Radius). I use the 0.02" radius 60° variant.
plastikdreams
Diamond
- Joined
- May 31, 2011
- Location
- upstate nj
It actually does a good job. I regularly go .008 to .010 deep for engraving and it leaves no raised edges. I run 12000 rpm and 20 ipm, single pass.
This is getting to be like pulling teeth....
1. Material ?
2. Depth of cut ?
3. Shape of cut ?
Material most likely mild steel, ductile iron, possibly stainless steel, and ocassionally brass.
Depth enough to be readable by a human being, do you have advise on what depth to target?
Letters maybe 1/4" tall
Kyle Smith
Stainless
- Joined
- Apr 25, 2008
- Location
- Helmer, Indiana, USA
With the ball endmill the lighter you go the more noticeable Z height variations become. 0.004"-0.005" looks pretty good.
