You can use an engraving spindle which takes a Gravograph nose and allows cutting depth to be set by the amount of cutter protrusion, a nose with a pivoting ball with through hole for the cutter allows engraving over 10 degrees either way around a 20mm cylinder with a 2D engraving job
[QUOTE=magicniner;65341]You can use an engraving spindle which takes a Gravograph nose and allows cutting depth to be set by the amount of cutter protrusion, a nose with a pivoting ball with through hole for the cutter allows engraving over 10 degrees either way around a 20mm cylinder with a 2D engraving.
That only works fine for 2D engraving if everything is to be engraved at the same depth. G.
The text on this 20mm radius curved Titanium sheet part is about 3mm high -
It's possible to engrave 3 or 4 lines of text on these 20mm radius parts without noticeable depth/width variation.
If you want 3D engraving you just set flat parts perfectly level, anything else you model the surface for and then set up your part in exactly the orientation in which it was modelled,
Last edited by magicniner; 31-12-2014 at 08:50 PM.
Thanks Nick, I am aware of what you are saying, I was merely making the point that whilst a fixed projection from a spring loaded toolholder will follow the existing surface and ensure a steady depth below that surface, it will not allow engraving at different depths. I do have a card/vynal cutter that uses exactly that system. G.
Does a spring loaded cutter with no depth guide allow accurate variable depth engraving over an uneven surface?
Or will changes in surface height change the pre-load on the spring and vary depth?
When I referred to a fixed projection, I did of course mean a fixed projection from a nosing that touches the surface. G.
Here's another spring loaded tool
http://www.mrrace.com/SpringTool/index.htmSpelling mistakes are not intentional, I only seem to see them some time after I've posted
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