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| Right Angle Arbor - Fret Slotting http://w-ww.luthiersforum.com/forum/viewtopic.php?f=10106&t=43671 |
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| Author: | Glenn C Foster [ Wed Jun 18, 2014 4:15 pm ] |
| Post subject: | Right Angle Arbor - Fret Slotting |
Had an idea bouncing around in my head for a couple of weeks now, wondering if anyone has attempted to use and angle grinder as a right angle arbor for fret slotting? There would be a few things to think of like speed adjustment, fitting correctly to the cnc, arbor adapters to fit the blade.. etc.. Anyone seen anything like this or have experience with it? Keen to give it a go as long as there isn't anything at a glance that may not make it feasible. Cheers Glenn |
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| Author: | Sheldon Dingwall [ Wed Jun 18, 2014 4:44 pm ] |
| Post subject: | Re: Right Angle Arbor - Fret Slotting |
I've seen someone's setup like that. Benevente's I think. |
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| Author: | RandK [ Wed Jun 18, 2014 5:19 pm ] |
| Post subject: | Re: Right Angle Arbor - Fret Slotting |
I'd be worried about TIR at the blade edge. Angle grinders aren't really intended to be precision tools. Lotza work to get it mounted and aligned. Cool idea. I've been drooling at an HSD aggregate head that's been on Ebay for a while $$$$$. No way. |
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| Author: | arie [ Thu Jun 19, 2014 10:26 am ] |
| Post subject: | Re: Right Angle Arbor - Fret Slotting |
i've seen this done before but the results to me didn't demonstrate quality. as stated, spindle t.i.r and wobble is horrible on those things. then there's the compressor oil spitting out... i'd probably make a head myself. years ago i designed and made a 90 milling head for a star cnc lathe to do slotting and it was easier then it looked. bevel gears, bearings, er collet spindle, and an aluminum housing. it was pretty cool. |
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| Author: | Rick Hubka [ Thu Jun 19, 2014 7:37 pm ] |
| Post subject: | Re: Right Angle Arbor - Fret Slotting |
One of the fellows at the Joe's CNC forum did just that a few weeks ago and put the video on YouTube. Here it is https://www.youtube.com/watch?v=UeK3Kkt5jvE#t=19. He used a battery angle saw. Watching it, all I can vision is a fret saw. Cool!!! |
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| Author: | Bob Garrish [ Sun Jun 22, 2014 12:05 pm ] |
| Post subject: | Re: Right Angle Arbor - Fret Slotting |
For the effort, just get a small high speed spindle and mill them. Depending on your feed rate limitations, you can cut slots just as quickly, you can do blind slots to eliminate binding and end-filling, and you can cut inlay and other small items with the same spindle. Small electro-spindles that'll do 45-60K are are cheap now. |
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