Diamond File

  • Advertise with us

« back to Power Tools, Hardware and Accessories forum

Forum topic by Kazooman posted 08-28-2018 08:56 PM 464 views 0 times favorited 2 replies Add to Favorites Watch
View Kazooman's profile


1413 posts in 2564 days

08-28-2018 08:56 PM

I just eased the edges on a maple / purpleheart end grain cutting board with a 1/4” round over router bit. Quite a bit of burning on the purpleheart (more than I am accustomed to). Time to sharpen the bit.

A good reason for a road trip to Woodcraft. They don’t seem to have a huge selection. Any comments on this file?

I will probably spring for a new round over bit as well as long as I am up there. It is quite a long drive, after all. Actually, as long as I am all the way up there, I might as well stroll through the Festool department, and maybe look at the sliding table for my SawStop. Clamps. You can never have enough clamps. This could get expensive.

Note added:

Darn! It is not in stock in Grand Rapids. They do have this one:

Twice the money, but probably more versatile with the half round side.

2 replies so far

View therealSteveN's profile


4672 posts in 1186 days

#1 posted 09-05-2018 03:26 AM

I'd take a strong look at this one, especially if you are concerned at all about cost. Lotta bang for the buck there. I didn’t have a handled file or rasp for a long time. I always thought that was what shop towels were made for.

Kinda confused by the Purpleheart burning mention, and not the Maple Generally softer is more prone to burning, even if it is hard Maple it’s softer than Purpleheart. If it’s soft Maple, it is maybe the most burn prone wood out there next to Cherry.

-- Think safe, be safe

View Kazooman's profile


1413 posts in 2564 days

#2 posted 09-05-2018 12:23 PM

Thanks for the response. The diamond file is to sharpen the bit, not round over the wooden board. I do have several handled wood rasps, but they are not the tool for this job.

I did go to the Woodcraft store and purchased three card style diamond sharpeners like this one.

The coarse one should handle any nicks I might incur. I just used the fine grade and then the extra fine one to quickly get a great edge on the bit and a mirror like finish.

The wood is hard maple. Yes, it is prone to burning also, but in my experience purpleheart is much more likely to burn. Only the purpleheart portions on the board showed significant burning. Note that this is rounding on the end grain, not along with the direction of the grain. Perhaps that makes a difference. I have to agree on cherry. I love working with it, but it is really important to have clean sharp saw blades and even then you can expect to do a bit of clean up after milling the stock.

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics