Thread: sanding the blade?

I see that one Lynn used on MO meeting . i was thinking something smaller size.it does hurts your fingers when you do with hand.

Sham try an appliance repair place that repairs washing machines, they should have a few old motors laying around, these are heavy duty, and spin at either 1100, or 1725 rpm, either will make a good buffer with the right mount..... The one you do not want is a 3450 RPM grinder motor that is just FAST !!!!!!!!

Or of course you can drop the cash and buy a Baldor

http://www.baldor.com/products/produ...Buff%5FBuffers

I have previously used hand sanding with just wet and dry paper and my fingers. This way is dangerous and it took me many days to get a result. But after seeing Bruno's sanding block, I made one out of some balsa wood scraps. With this I can acheive the same result in a day and a bit. And there is very little chance of the razor biting my fingers.

One of these arbors and an old 1725 motor makes a nice setup. The wheels are easy to change and the feet/minute is slow enough not to be real scary. Another nice thing is you can use different size buffing wheels, I mainly use 1.5" and 3" wheels.


Charlie

You can buy some of those felt wheels that dremel sells and apply SIC grit to it with gorilla glue or another adhesive. I've done this and it seems to work pretty well. You pretty much just make a very small grinding/sanding wheel. You need to make sure that the mandrel hole is centered, though.

You can also make miniature buffing and grinding wheels from scratch with cloth and a cloth adhesive. I've made grinding wheels in 80, 220 and 600 grit and they seem to be very effective for their respective grits.

sham

as you seen what lynn did with his wheel. the one he had was the 3400 rpm. way to fast. here is a link for one that is nice and slow and will save a huge amount of time. Caswell Inc. - Wood and Acrylic Polishing Kit this one right here would work great. you just need to be really aware of the blade. i wouldnt go more then 2-3 seconds then drop it in water to cool down. i know 190 sounds like alot but a good dremel will run you about 80 to 100 bucks. just food for thought. have a good one

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

Hello 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,