Creating a burr on a scraper

UKworkshop.co.uk

Help Support UKworkshop.co.uk:

graduate_owner

Established Member
Joined
5 Aug 2012
Messages
2,109
Reaction score
14
Location
Llandeilo
Hi everyone,
Just wondering - would it be possible to sharpen a scraper by using a burnisher instead of the grinding wheel?
And if so, would any really hard steel do the job - perhaps a file with the teeth ground off, or a rod of HSS or carbide (such as a broken carbide drill or router cutter)? I was thinking of the scrapre placed flat on a bench and the burnisher being hand held. Has anyone any experience with this? I seem to remember a Veritas jig for rubbing a turning scraper against a carbide post but these seem to be unavailable now so I was thinking of a diy version.

K
 

Ollie78

Established Member
Joined
4 Aug 2011
Messages
1,394
Reaction score
637
Location
Wiltshire
Any smooth metal harder than the steel will work to turn the burr. The shank of a solid carbide endmill for example.

Ollie
 

TomW

Established Member
Joined
22 Mar 2021
Messages
20
Reaction score
95
Location
Preston
I didn't even know you could sharpen one with a grinder. I've used some screwdrivers in the past to get the burr on them.
When I do them I put them at the edge of a bench to get the burr started and move to them into a vice to flair out and angle the burr.
 

bp122

Expert at Jibber-Jabber
Joined
20 Aug 2019
Messages
775
Reaction score
350
Location
Haddenham
Only two nights ago I used my scrapers after a long time (need to sand one of the presents, couldn't use the sander as it was 11 at night), so deburred my scrapers fully and established fresh burrs on them using an oil stone.

Same as above, I didn't know once can sharpen scrapers on a grinding wheel. I use an HSS rod bought off eBay a while ago, handheld, while the scraper is held in the vice. I do use thin strips of wood (narrower than the scraper) on either side of the scraper to avoid flattening the new burnished burr when doing the second long edge, if that makes sense.

I clamp it so that only a small portion (about 5 mm) of the scraper is sticking above the vice and burnish it at a shallow angle.

If you are feeling fancy, you can get yourself one of the Arno burnishers (£30-£35) Never heard a bad word about them. But an old, long and smooth screwdriver shaft will do a good job or an HSS rod like I mentioned I use.

The whole project took very little time to finish as I had done all the hard work with the scrapers, and no noise!
 

graduate_owner

Established Member
Joined
5 Aug 2012
Messages
2,109
Reaction score
14
Location
Llandeilo
Ah, my fault there, sorry for the confusion. I was asking about a wood turning scraper. I have a few older Marples carbon steel scrapers, and some HSS ones. Phil, any idea what I could use on a HSS woodturning scraper? Would carbide work?

K
 

Phil Pascoe

Established Member
Joined
29 Jan 2012
Messages
23,086
Reaction score
3,153
Location
Shaft City, Mid Cornish Desert
I thought that was what you meant, but I wonder if others did. They take seconds to grind - why would you wish to make hard work of it? Incidentally, the pro turner at the club said it made no difference whatsoever whether they're ground up side down or not. I grind them upside down - there is no burr at all if they're ground face up, so the burr can't be that important.
 

Chico

Established Member
Joined
16 Jun 2007
Messages
88
Reaction score
9
Location
Bardney, Lincs..
OK, the Veritas burnisher is back in production after being AWOL for a while and is available in the UK.

More importantly I shared this video a while back on another forum ref. raising burrs and the fella was won over. It is more in ref. to Neg rake but applicable to all.



Run it back to the beginning.
 

Henniep

Established Member
Joined
15 Feb 2019
Messages
93
Reaction score
78
Location
South Africa
Forgive if this is old news, but someone may learn from it. The secret with sharpening/dressing turning chisels on the ginder is that the tip should never get hot whilst u're grinding. Dipping it in water whilst grinding is a myth - the edge will not keep if the metal is overheated. Soft stone, gentle pressure and patience!
 

Cozzer

Established Member
Joined
13 Jun 2017
Messages
352
Reaction score
557
Location
Derbyshire
If you are feeling fancy, you can get yourself one of the Arno burnishers (£30-£35) Never heard a bad word about them. But an old, long and smooth screwdriver shaft will do a good job or an HSS rod like I mentioned I use.


I got an Arno Carbur 2 Solid from Workshop Heaven last year sometime. Came in a dinky little leather wallet thing which I promptly lost to the wife for some purpose!
I use cabinet scrapers a lot, essentially for levelling marquetry inlays prior to finishing, so anything that helps/speed up the sharpening process is a boon.
Pricey, yes, but brilliant to use.
 

Latest posts

Top