Rotary Tool vs. Impact Engraver (Just in case...)
FWIW, I don't think a rotary tool would work very well for engraving, with or without a template or guide. In particular, a rotary tool would be prone to chattering and/or 'walking' along the work surface − plus eating any template/guide that might get in the way.
A rotary tool excels at cutting and grinding.
In contrast, an impact tool (like the Dremel 290-01 mentioned above) is much more amenable to engraving.
If making it 'look good' is the goal, using the 'right' tool would probably help.
HTH 
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Complete thread:
- OT- small metal stencils...... - 
Gunner, 
2013-04-27, 13:40 ![Open whole thread [*]](themes/default/images/complete_thread.png)  - OT- small metal stencils...... - 
Slow Hand, 
2013-04-27, 19:33
- OT- small metal stencils...... - Gunner, 2013-04-27, 20:02
 
- OT- small metal stencils...... - FOG, 2013-04-27, 22:33
- Rotary Tool vs. Impact Engraver (Just in case...) - FOG, 2013-04-27, 23:02
- Re: Brass Stencils - FOG, 2013-04-27, 23:53
- Or find someone with a Marking Methods electrochemical - John K., 2013-04-28, 13:17
 
- OT- small metal stencils...... - 
Slow Hand, 
2013-04-27, 19:33