| Gallery, Projects and General > How do I?? |
| Engraving/marking tools |
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| chipenter:
I have used a acid eching pen in the past just don't hold the part you are etching , or there is now a spark engraving tool a small EDM with a wet tip instead of an imersion tank . |
| awemawson:
I have a spark etching marker that works ok but as as has been said you need a good hand. I seem to recall that you have a small CNC Mill, and also you made a spring loaded engraving head so why don't you use those :scratch: |
| philf:
Hi Chris, The engraving looks very much like it was done with an Actograp engraver. This uses a tungsten stylus and makes the mark by 'sparking'. The work to be engraved has to be conductive. When the stylus touches the work a circuit is made. This energises a coil in the handset which attracts the armature which holds the stylus pulling it away from the work breaking the circuit and making the spark (or arc). The stylus then returns and the circuit is made again. It's fairly easy to write neatly with one. I much prefer mine to my Burgess engraver for marking tools. The Burgess wins on non-conductive materials. Phil. |
| awemawson:
--- Quote from: philf on August 24, 2015, 04:25:34 AM ---Hi Chris, The engraving looks very much like it was done with an Actograp engraver. This uses a tungsten stylus and makes the mark by 'sparking'. The work to be engraved has to be conductive. When the stylus touches the work a circuit is made. This energises a coil in the handset which attracts the armature which holds the stylus pulling it away from the work breaking the circuit and making the spark (or arc). The stylus then returns and the circuit is made again. It's fairly easy to write neatly with one. I much prefer mine to my Burgess engraver for marking tools. The Burgess wins on non-conductive materials. Phil. --- End quote --- That's the one I have. I use bits of tig tungsten's as replacement tips It's only really a buzzer - the holder is attracted to an electro-magnet, breaking the contact and arcing, it then relaxes and the cycle starts again. Mine has the original transformer with voltage tappings for varying the depth |
| raynerd:
Hi Andrew, the small CNC was sold a year ago when I moved house to pay estate agent fees!!!! :-( Phil, hope all is well, is the clock finished yet? Thanks for the suggestion, I'll do some googling. |
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