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| what i’ve been working on http://www-.luthiersforum.com/forum/viewtopic.php?f=10102&t=5723 |
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| Author: | PaddyD [ Sat Mar 18, 2006 1:54 pm ] |
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hey there, i have been doing some inlays for people on the CNC lately and just wanted to share  
thats for a rosette, its one of 13 pieces in the rosette 
this one is going between 11th and 12th on an existing classical guitar, it is the symbol of the subud spritual movement |
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| Author: | Serge Poirier [ Sat Mar 18, 2006 2:06 pm ] |
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Looks like you got the hang of the CNC Paddy! Really nice work bud! 
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| Author: | A Peebels [ Sat Mar 18, 2006 2:09 pm ] |
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Paddy That is really nice. CNC is just a step away from magic. When I lived in California, a friend had a large laser cutter that worked off of a CNC setup. I was amazed at some of the intricate jobs that he would do. Al |
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| Author: | ctholden [ Sat Mar 18, 2006 2:26 pm ] |
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Nice work Paddy. Looks like you're having fun with your CNC.
Craig |
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| Author: | Jason [ Sat Mar 18, 2006 5:17 pm ] |
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[QUOTE=A Peebels] Paddy That is really nice. CNC is just a step away from magic. When I lived in California, a friend had a large laser cutter that worked off of a CNC setup. I was amazed at some of the intricate jobs that he would do. Al[/QUOTE] Laser cutters are great too! I've done a bunch of wood and plexi templates with one. Wish they could cut shell though  Paddy would you share photos of the actual CNC?
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| Author: | Jason [ Sat Mar 18, 2006 5:24 pm ] |
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I looked in the CNC forum.. I shoulda checked there earlier.. Very cool |
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| Author: | Heath [ Sat Mar 18, 2006 11:10 pm ] |
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Wow that is something else, I did not know cnc could get that small. so shell can't not be cut by a laser cutter? shame I was thinking about getting my inlays done by a woman who lasers my pickups. |
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| Author: | Billy T [ Sat Mar 18, 2006 11:27 pm ] |
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[QUOTE=Heath]so shell can't not be cut by a laser cutter? shame I was thinking about getting my inlays done by a woman who lasers my pickups.[/QUOTE] I'm pretty sure it can be water jetted! I've never seen anybody do it, but if you can cut ceramic you can cut shell! |
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| Author: | PaddyD [ Sat Mar 18, 2006 11:28 pm ] |
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yep CNC can go that small, only trouble is you have to use .010 carbide cutters, and they are like $35 a piece, they break without warning, and it is slow, that symbol took 4.5hrs to cut, as the feed rate is only 1" per minute, and is depth pass is 0.15mm, but i really get a kick out of it!! |
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| Author: | PaddyD [ Sat Mar 18, 2006 11:29 pm ] |
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i tried water jet, and it is ok for fairly simple shapes, but for very fine stuff it just blows the shell to pieces |
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| Author: | Colin S [ Sun Mar 19, 2006 12:02 am ] |
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Paddy I have got to come and visit you! Colin |
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| Author: | Don Williams [ Sun Mar 19, 2006 12:16 am ] |
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Paddy, do you have a high-speed spindle? |
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| Author: | PaddyD [ Sun Mar 19, 2006 4:28 am ] |
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my current spindle is 24k, i am trying to get an air turbine spindle made with a 90k speed, then i can cut the machining time a lot, especially with small cutters |
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| Author: | Billy T [ Sun Mar 19, 2006 9:49 am ] |
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[QUOTE=PaddyD] i tried water jet, and it is ok for fairly simple shapes, but for very fine stuff it just blows the shell to pieces[/QUOTE] Never thought of that! Did you try and glue it to something substantial before cutting and removing, after the cut, of course! Billy Dean |
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| Author: | Jason [ Sun Mar 19, 2006 4:01 pm ] |
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[QUOTE=Heath] Wow that is something else, I did not know cnc could get that small. so shell can't not be cut by a laser cutter? shame I was thinking about getting my inlays done by a woman who lasers my pickups.[/QUOTE] We tried and tried but it would not work.. I can cut plexi, wood and engrave glass or metal but cant cut shell. It dispurses the heat or something and just makes a big mess. Feel free to try it though.. Maybe your laser guy knows something mine doesn't. I gave up after I looked around and noticed all the big inlay guys use CNC with those little bits.. Figured if they could get away with a laser instead of dealing with the cnc and all those bits they would have. |
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| Author: | Jim Watts [ Sun Mar 19, 2006 4:35 pm ] |
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Lasers don't like highly reflective surfaces and maybe the bigger issue here is that different frequencies couple or don't couple with materials. For example I have a 100W laser at 1064nm and can't cut 1/16 plastic of alsmost any kind. Go figure, but it's a coupling issue. So, some laser would probably be able to cut it. |
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