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Cleaning up auger bits

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Forum topic by BenDupre posted 06-13-2017 07:09 PM 1481 views 0 times favorited 12 replies Add to Favorites Watch
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BenDupre

745 posts in 1262 days


06-13-2017 07:09 PM

Topic tags/keywords: auger bits rust cleaning

Picked up an old set of Stanley Russel Jennings augers on flea bay. They are in good shape with a little rusty spots. What is the most painless way to shine these up?

Thanks!

-- The problem with communication is the illusion that it has occurred. – George Bernard Shaw


12 replies so far

View Bill White's profile

Bill White

5289 posts in 4734 days


#1 posted 06-13-2017 07:37 PM

There are some who would use a soft or brass wheel on the buffer. I prefer to use a stupid simple piece of cotton sash cord with valve grinding compound. Kinda act as if you’re shining shoes as the motion within the lands of the bits.
Sharpening is a different issue. Lots of time and good files.
Bill

-- [email protected]

View UpstateNYdude's profile

UpstateNYdude

947 posts in 2757 days


#2 posted 06-13-2017 07:39 PM

Soft brass wheel to get rid of the rust and dirt and then a buffing wheel or some metal polish.

-- Nick, “I am always doing what I cannot do yet, in order to learn how to do it.” – Vincent Van Gogh

View Tim's profile

Tim

3859 posts in 2735 days


#3 posted 06-13-2017 08:11 PM

The threads on the lead screw are relatively delicate, so anything you would need to use a brass brush on isn’t going to be easy to clean up to great shape. Here are the best things to do to auger bits:

1. Remove the rust. If you they are pitted and the lead screw is significantly rusty, again they won’t be easy to clean up well to good users.

2. Sharpen them. Just sharpen the cutting lips and the inside of the spurs. If you sharpen the outside of the spurs without understanding the cutting geometry of an auger bit you will decrease the diameter that the spurs cut and the bit will bind in the hole. If you spin the auger against some abrasive paper and keep it flat, you will maintain the proper clearance diameter. Also make sure to maintain the clearance angle on the front side (side towards the wood you’re going to cut) of the cutting lips. Most advice will say to leave that side completely alone and just sharpen the bevel.

3. Clean and polish the lead screw. I like to use a brass brush by hand, not in a buffer to be more gentle. Then screw the lead screw into a scrap piece and press some polishing compound into the hole then screw the lead screw in and out many times and it will polish the threads.

You can chase the threads with a 3 corner file or needle file, but it is challenging to keep the right angles and spiral. Again, any that need this are typically more work than they are worth.

Cotton sash cord with compound is a great idea to clean the spiral part of the auger away from the lead screw, I’ll have to try that.

View Ron Aylor's profile

Ron Aylor

2649 posts in 1421 days


#4 posted 06-13-2017 08:21 PM

I would soak them in vinegar over night then tune-up with an auger file …

View Smitty_Cabinetshop's profile

Smitty_Cabinetshop

16697 posts in 3392 days


#5 posted 06-13-2017 09:13 PM

I’d wipe each of them thoroughly with a WD-40 soaked rag to get them coated, and use them.

-- Don't anthropomorphize your handplanes. They hate it when you do that. - OldTools Archive -

View papadan's profile

papadan

3584 posts in 4142 days


#6 posted 06-13-2017 09:34 PM



I d wipe each of them thoroughly with a WD-40 soaked rag to get them coated, and use them.

- Smitty_Cabinetshop


+1 Using them on some scraps is an easy way to really clean them. Heavy rust spray a little WD40 and let soak for a while, then use.

View Jim Jakosh's profile

Jim Jakosh

24796 posts in 3879 days


#7 posted 06-14-2017 02:19 AM

Apple cider vinegar will take the rust off. Soae them for a day in it but it might turn the shafts black but they will be clean an usable.

Jim

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

View Mr_Pink's profile

Mr_Pink

193 posts in 1146 days


#8 posted 06-14-2017 03:17 AM

I went through this several months ago and made the mistake of neglecting #3 on Tim’s list above. Don’t do that. I almost gave up on a set of perfectly serviceable bits (complete with a nice box). I thought they weren’t cutting because something was wrong with the parts of the bits that actually cut. Out of desperation, I decided to follow directions and polish the threads of the lead screw. Now the bits work fine.

View BenDupre's profile

BenDupre

745 posts in 1262 days


#9 posted 06-14-2017 05:12 AM

Thanks for the advice all. Fwiw these Russel Jennings bits cut really well. I have some craftsman augers it seems to take a lot more effort to bore with them. I sharpened those and it helped a little but the lead screw wants to strip the hole and then the bit stops feeding. That hasnt happened in any of the test holes i made with the RJs.

Also BTW in case any one has a comment: it took me quite a while to score a full set on the bay. Aparently there is quite a market for these. The boxed sets are going for a hundred plus bucks. I saw a set in a canvas roll stencilled U.S. ROLL, CANVASS,WOOD BORING AUGER BITS go for a hundred seventy five. Probably went up San Juan hill with TR and the Rough Riders.

These are in a vinyl roll probably 1960s vintage.

-- The problem with communication is the illusion that it has occurred. – George Bernard Shaw

View WayneC's profile

WayneC

14358 posts in 4871 days


#10 posted 06-14-2017 09:37 PM

My favorites. Have both 100 and 101 sets in boxes.

-- We must guard our enthusiasm as we would our life - James Krenov

View TheFridge's profile

TheFridge

10859 posts in 2260 days


#11 posted 06-14-2017 11:17 PM

Difference between the 2? Coarse & fine leadscrew?

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View theoldfart's profile

theoldfart

11632 posts in 3225 days


#12 posted 06-15-2017 12:21 AM

yup

-- "With every tool obtained, there is another that is needed" DonW ( Kevin )

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