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Thread: sanding the blade?
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06-18-2009, 04:59 AM #11
on metal I have always preferred the consistent grit of a good quality sharpening stone to sandpaper. Slipstones are usually more shapeable than a regular- the ones Shapton makes for instance.
But even a regular synthetic or nat can be cut down and shaped to fit.
It's not super fast but tis better than paper imho
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hi_bud_gl (06-18-2009)
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06-20-2009, 05:11 AM #12
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Thanked: 2209Hello Sham,
The major concern is speed control and hand control. 1750 rpm is about the max that you want. I am using a Foredom clone ( Dremel type tool) that has a highly variable speed. Like this...
http://cgi.ebay.com/NEW-WOOD-CARVING-FLEXIBLE-SHAFT-W-FOREDOM-Stone-NEW_W0QQitemZ140327817583QQcmdZViewItemQQptZLH_Def aultDomain_0?hash=item20ac30916f&_trksid=p3286.c0. m14&_trkparms=65%3A12|66%3A2|39%3A1|72%3A1205|240% 3A1318|301%3A0|293%3A1|294%3A50
500-22,000 rpm is nice
and using these......
Disks - Adhesive: Widget Supply on a slow speed. I have made my own sanding disks from 600 & 1000 grit wet/dry sandpaper and used a "Feathering
Disk Adhesive" by 3M to tempoarily attach it....
GemWorld-GLUE and RELATED ITEMS
these are good for the bulk of the work but you will need to finish on a buffer. In all honesty I do not like 1750 as a speed for a buffer. I would like it much slower....like 875 rpm so that I have more control.
The sanding disks work well but leave a "swirl" pattern on the blade that needs to be removed by the buffer using either the greasless compound or gluing some 600-1000 grit sandpaper to a small, 2"-4", wheel with a soft covering like Spazola makes. I think a soft or medium hardness felt wheel/bob like this....
Duro-Felt Products
covered with some bicycle inner tube then use the feathering glue to temporarily attach sandpaper to the rubber. The wheel should be 1" wide/thick at a minimum. That takes care of the "swirl".
For a variable speed motor for a buffer you might consider a commercial sewing machine motor or a treadmill motor with the controls intact.
Just some ideas,Randolph Tuttle, a SRP Mentor for residents of Minnesota & western Wisconsin
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06-20-2009, 07:04 PM #13
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Thanked: 2Randy, how well does sanding with a set up like that work? Does the blade get really hot? Do you have to put it in water to cool it off?
How long does it take to sand a blade with that set up?
I have a multiple speed dremel with a foot switch that can slow it way, way down. I have never used sanding discs because I thought it would get too hot. I'm not too sure how slow I can get my dremel to go either.
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06-20-2009, 09:00 PM #14
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Thanked: 2209Randolph Tuttle, a SRP Mentor for residents of Minnesota & western Wisconsin