Thread: shear scraper

Hi daddy, I'm also a guy who love it to make my own stuff as much as possible.
Made multifacenet scrapers from a blade of a racing skate. This blade is 2mm thick,
Just a matter of grinding the shape and drill a hole
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Hi Daddy, I regularly make a scraper by silver soldering a piece heavy duty machine hack saw blade to a piece of 30 x 10mm mild steel bar. They work well.
Jim

If you can find an old planer blade they make great teardrop scrapers. I scored one about 3mm thick and 35mm wide (no idea what it came off ). I used a 1mm thick cutting wheel in a 4" angle grinder to cut the basic shape out and refined the shape on a normal grinder. I have a set of special drill bits to drill the mounting hole in the HSS but you could just cut a slot in from the side with the angle grinder if need be.

I made a multitip scraper from an old metalwork file. Only the tip is from the file, he works wel. Its a copT of the Sorby rs 200kt.

18 years of hockey and the first of many solutions is in my garage, the multiple pairs of old skates. Should provide more than enough to start with. I knew I would eventually be able to justify my packrat tendecies..."I might really need this someday." So any reasonable thickness steel should suffice. Where are the oddest places you all find your metal?

Like TTiT, I find that old HSS jointer & thicknesser blades are ideal.

They do take a bit of extra tooling to work though, but it's worth it.

Quote " Where are the oddest places you all find your metal?"

I do a little metal working so I pick up stray steel as well as stray wood lying about.

My oddest piece was a hunk of corroded, concrete covered, steel bar, 1/2 X 3/8 inch that had been used as a concrete form stake.

One day out of curiosity I spark tested it on the grinder and it was high carbon steel.

I put a curved nose, 80 degree grind on it and it is one of my most used tools. It is a little over two feet long with a fat handle so does not bounce around. I use it for hollowing bowls and the outside also.

When I use it I turn the grinder on along with the lathe, cut a bit, give it a swipe on the grinder, cut a bit, etc.

I have a forged bicycle crank that I'm grinding down to make the hole where the pedal goes in into a circular cutting tool. I'm using the end as a heavy scraper until it is ground thin enough.

Hi all,

Done this before, but had lots of issues drilling the tool steel....eventually used a tile drill!

Anyone got better a solution?

GC

Originally Posted by GC

Hi all,

Done this before, but had lots of issues drilling the tool steel....eventually used a tile drill!

Anyone got better a solution?

GC

I bought a set of what I think are carbide tipped drill bits from a bloke based in Vic. They weren't cheap but they do the job very nicely in HSS and go through tool steel like butter. I posted details of them way back on this thread.

Originally Posted by TTIT

I bought a set of what I think are carbide tipped drill bits from a bloke based in Vic. They weren't cheap but they do the job very nicely in HSS and go through tool steel like butter. I posted details of them way back on this thread.

Superb drill bits....they go through anything effortlessly and I picked up spare sets from trash and treasure markets brand new for much less than the normal price more than 10 years ago, and still working well.
I don't think the stall holder knew the quality of these bits he was flogging for next to nothing. I just had to buy them as spares.
The first set I bought was in 1993 from the wood show and at the time they set me back $70, which was a lot but well worth every cent.
It is beyond me why they are not sold in tool shops or hardware chains

Originally Posted by Evan Pavlidis

Superb drill bits.....................
It is beyond me why they are not sold in tool shops or hardware chains

...'cos then every bugga would be making their own scrapers and they'd never get to sell another and blokes wouldn't keep wreckin' their soggy old HSS bits and have to replace so many

Originally Posted by TTIT

...'cos then every bugga would be making their own scrapers and they'd never get to sell another and blokes wouldn't keep wreckin' their soggy old HSS bits and have to replace so many

My sentiments entirely.

I am doing a bit of research on the definitions, and if I understand correctly "shear" scraping or cutting is defined as such only by the angle between the blade and the grain. It would therefore follow that no blade is a "shear" blade in itself, because any blade can be used in shear mode. So, if something is sold as shear something, I take it to mean only that it is supposed to work best for that mode of cutting. Am I missing something?

In particular, if a skew is designed to shear (as Skew said in 2005) and a gouge can be used to cut and shear, why are only certain scrapers defined "shear scrapers"?

Carbide tipped hey, will have to Ebay now.......
Thanks for the tips

GC

not that expensive....

Think I paid $12 for one!

6PCE TUNGSTEN CARBIDE TIPED GLASS & TILE DRILL SET - eBay Drills, Power Tools, Tools, Home. (end time 02-Nov-09 20:19:49 AEDST)

GC