Tool Talk

What's-It Forum => What's-It Forum => Topic started by: coolford on December 03, 2020, 03:10:06 PM

Title: Stumped on these
Post by: coolford on December 03, 2020, 03:10:06 PM

These were in a box lot and thought they were files at first.  However, the triangle shape has sharp edges and a point but no teeth on the edges or sides.  Even more confusing is the one with a wood handle has a Nicholson, warrented, USA mark.  What are they and how used?

Title: Re: Stumped on these
Post by: oldgoaly on December 03, 2020, 03:16:44 PM

could it be inside  small hole deburring tool?

Title: Re: Stumped on these
Post by: lptools on December 03, 2020, 03:19:29 PM

Those are 3 Edge Scrapers, or Machinist's 3-sided Scraper. Most that I have were found in Machinist's tool boxes, for de-burring holes, edges, or, flat surfaces on metal.

Title: Re: Stumped on these
Post by: Analog on December 03, 2020, 05:05:45 PM

My thought on these would be bearing scrapers.

Title: Re: Stumped on these
Post by: lptools on December 03, 2020, 05:13:51 PM

I believe traditional bearing  scrapers are curved, and 2-sided. Not that a 3-sided scraper couldn't be used for bearings!!

Title: Re: Stumped on these
Post by: p_toad on December 03, 2020, 07:32:42 PM

i'm going with the 3 sided scraper.   i have an old shorty (like those) and a much longer one i got from a neighbor's yard sale that is probably 8 or 9 inches long (not including handle).

Title: Re: Stumped on these
Post by: mikeswrenches on December 03, 2020, 09:09:35 PM

I’m with Lou, these work great for scraping paint spots off wood or metal too. Lots of different sizes also. The one I use the most is about an eighth of an inch on a side. Keep them sharp!

Mike

Title: Re: Stumped on these
Post by: Bill Houghton on December 03, 2020, 09:21:32 PM

Quote from: lptools on December 03, 2020, 03:19:29 PM

Those are 3 Edge Scrapers, or Machinist's 3-sided Scraper.

And they're dynamite useful tools when sharp.  I own two, and would not want to be without them.  Great for deburring holes and similar edges.

Title: Re: Stumped on these
Post by: amecks on December 04, 2020, 05:57:11 AM

I use mine all the time. I have two and a third one I made from a triangular file - it took a very long spell at the grinder to make it.
Al

Title: Re: Stumped on these
Post by: coolford on December 04, 2020, 07:28:33 AM

Much thanks, now I have another tool to use instead of a file.

Title: Re: Stumped on these
Post by: wvtools on December 04, 2020, 07:39:10 PM

The mechanics scraper sets like Mound made had one in them.

Title: Re: Stumped on these
Post by: leg17 on December 04, 2020, 08:09:46 PM

Sometimes shop-made from triangular files.
A great many machinists have at least one and find them indispensable.

Title: Re: Stumped on these
Post by: d42jeep on December 07, 2020, 09:53:31 PM

I believe that they were used on babbit bearings. One was included in the WW2 machinist’s set. The color pictures are my re-creation of that set.
-Don

Title: Re: Stumped on these
Post by: lptools on December 08, 2020, 05:03:43 AM

Hello, Don. Here is a photo showing the difference between a 3-Sided Scraper, and a Bearing Scraper. Once again, you can use a tool for whatever you need to get the job done, but the photo should clear up how the 2 different tools were designed, and marketed. Stay safe, Lou

Title: Re: Stumped on these
Post by: d42jeep on December 08, 2020, 07:22:18 AM

I have both types of scrapers. Like you say, they are used for whatever is required. I often use my three corner for getting burrs out of the inside of PVC pipe.
-Don

Title: Re: Stumped on these
Post by: skipskip on December 08, 2020, 08:41:13 AM

Oh wait...

there are machinist tool sets from the Military too......?

Yet another rabbit hole

where to find info on them?


Skip

Title: Re: Stumped on these
Post by: d42jeep on December 08, 2020, 10:38:23 AM

Here is a thread about my set on G503.com

https://forums.g503.com/viewtopic.php?f=48&t=271857

-Don