Diamond Cutting Disc

[GSRocket]

I want to cut down some router bits to experiment with different profiles before I bite the bullet and get a custom bit made up.
Has anybody used these....They are resin bonded diamond discs and come from Hong Kong.
I estimate that it will take three or four attempts before I get the profile I like.
The router bits that will be re-profiled are only 19mm. Do you think one of these will do the job....Also would it be feasible to fine tune the profile with diamond files?


http://pic01.uxsight.com/i/12a/ux_a12010600ux0145_ux_c.jpg

Resin Bond Plain Diamond Grinding Wheel Grinder 240 Grit 150x10x32x4mm | eBay (http://www.ebay.com.au/itm/Resin-Bond-Plain-Diamond-Grinding-Wheel-Grinder-240-Grit-150x10x32x4mm-/390440433917?pt=AU_HardwareParts&hash=item5ae81038fd#ht_2573wt_1139)

[Bryan]

I got one very similar from CTC: DIAMOND GRINDING WHEEL - RESIN BOND - 100MM CUP TYPE #G28 (http://www.ctctools.biz/servlet/the-359/SOFT-RESIN-RESONOID-BOND/Detail). Obviously it's cheap & cheerful. The aluminium body has visible runout and minor vibration, but the important part runs true. I got it for shaping scraper blades, which it does very well. I got the 240 grit. I bet it would be fine for what you want, though maybe in a coarser grit. 240 would be pretty slow. In fairness I should also say I got a second wheel from CTC and sent it back because of apparent casting defects in the body, but this was refunded without quibble.

I find it odd that the type of bit you want is not common in industry. Hard to believe countersinking would be done as a separate operation in mass production.

[GSRocket]

I got one very similar from CTC: DIAMOND GRINDING WHEEL - RESIN BOND - 100MM CUP TYPE #G28 (http://www.ctctools.biz/servlet/the-359/SOFT-RESIN-RESONOID-BOND/Detail). Obviously it's cheap & cheerful. The aluminium body has visible runout and minor vibration, but the important part runs true. I got it for shaping scraper blades, which it does very well. I got the 240 grit. I bet it would be fine for what you want, though maybe in a coarser grit. 240 would be pretty slow. In fairness I should also say I got a second wheel from CTC and sent it back because of apparent casting defects in the body, but this was refunded without quibble.
Thanks for that.....sounds like it'll do the job and appreciate the link.


I find it odd that the type of bit you want is not common in industry. Hard to believe countersinking would be done as a separate operation in mass production.
The countersink is part of another process for the job.
As it turns out, 90 degree centre drills are available and I've emailed these people
to see if they have the right size.
Lathe Tools, Mill Tools, Drill Tools, Hardware, Cutting Tools - Millers Tooling, Brisbane, Australia (http://www.millerstooling.com.au/default.asp)
Does anyone know if it feasible to use a diamond file on tungsten carbide?

[Ueee]

Thanks for that.....sounds like it'll do the job and appreciate the link.

The countersink is part of another process for the job.
As it turns out, 90 degree centre drills are available and I've emailed these people
to see if they have the right size.
Lathe Tools, Mill Tools, Drill Tools, Hardware, Cutting Tools - Millers Tooling, Brisbane, Australia (http://www.millerstooling.com.au/default.asp)
Does anyone know if it feasible to use a diamond file on tungsten carbide?

Feasible but very slow, depending on the file you may strip the diamond of the steel, i have done this to an eze lap needle file on carbide. Stick with the wheels, or get some for a dremel type tool for the finer stuff.