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#58892 - 11/22/05 05:11 PM Sharpening a Step bit
BigB Offline
Member

Registered: 03/31/04
Posts: 727
Loc: Tucson, AZ USA
Anyone ever try to sharpen a step bit? I did a search and came up emptyhanded. Also asked 3 sharpening guys and they all said they couldn't do it. Mine is ruined anyway, I'd like to at least give it a try.

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#58893 - 11/22/05 05:43 PM Re: Sharpening a Step bit
e57 Offline
Member

Registered: 05/27/03
Posts: 2837
Loc: S.F.,CA USA
I have done it in a pinch with an angle grinder. But for the most part those guys are disposable. Unless you know some one with the XT3000, and add-on module for step drills. Shown further down on the page. Total for bit sharpening equipment ~$3500!
http://www.saw-toolsharpening.com/DrillSharpeningEquipment.html
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"Well - I oughta....." -Jackie Gleason

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#58894 - 11/22/05 07:32 PM Re: Sharpening a Step bit
renosteinke Offline
Cat Servant
Member

Registered: 01/22/05
Posts: 5305
Loc: Blue Collar Country
The sharpening guys are incorrect. A step bit is sharpened lik a counter-sink would be, not as a drill is.
Of course, a sharpening shop has no way to repair any coating that the bit may have had.

You're looking for a shop whose sharpening machine says "Cleveland," and not "Drill Doctor."

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#58895 - 11/23/05 02:17 AM Re: Sharpening a Step bit
iwire Offline
Moderator

Registered: 01/05/03
Posts: 4343
Loc: North Attleboro, MA USA
Time wasted finding a person that can sharpen them.

Time wasted dropping the bit off with that person.

Time wasted going to pick up the bit after sharpening.

Much quicker and cheaper (if you value your time) to toss it and order a new one.

By the way not letting it get dull helps a lot.

Part of that is keeping it cool, if I have a bunch of holes to make I will keep a cup of water near me to keep dipping the unibit in between holes.

I had to make about 70 1/2"holes in a trough, I put the unibit in my Hole hog, put the trough on floor and laid all my weight into the drill. In between each hole I dipped the bit into the water. After making the 70 holes the bit was still in great shape.

It also was done in just a few minutes.

Bob
_________________________
Bob Badger
Construction & Maintenance Electrician
Massachusetts

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#58896 - 11/23/05 04:33 PM Re: Sharpening a Step bit
JCooper Offline
Member

Registered: 12/30/02
Posts: 229
Loc: Kendall Park, NJ USA
I keep my step bits going by drilling in low speed and using dark cutting oil before I begin, cuts cleaner, faster and with less wear on the bit.

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#58897 - 11/23/05 05:05 PM Re: Sharpening a Step bit
ShockMe77 Offline
Member

Registered: 06/11/05
Posts: 823
Loc: Rahway, New Jersey
Hmm. Never heard of the cold water bit, I'll have to try that next time. Thanks for the tip!

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#58898 - 11/23/05 05:35 PM Re: Sharpening a Step bit
Trumpy Offline

Member

Registered: 07/05/02
Posts: 8540
Loc: SI,New Zealand
I assume by Step Drills, you guys mean something like a Cone Cut?.
They can be sharpened by hand and I've done it a few times with the couple that I own.
Thing is, like sharpening any cutting tool, you have to have the angle exactly right, otherwise you'll end up with a worse result than what you started off with.
Best to look after them while they are sharp though.
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#58899 - 11/23/05 05:49 PM Re: Sharpening a Step bit
LK Offline

Member

Registered: 01/21/03
Posts: 1721
Loc: New Jersey
"By the way not letting it get dull helps a lot.

Part of that is keeping it cool, if I have a bunch of holes to make I will keep a cup of water near me to keep dipping the unibit in between holes."

Bob, i have been using cup of water since i started using step bits, with good results, good post, as far as sharpen, not worth the time, we have a built in tooling charge, for all jobs, so cost is never a problem.

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#58900 - 11/23/05 06:17 PM Re: Sharpening a Step bit
BigB Offline
Member

Registered: 03/31/04
Posts: 727
Loc: Tucson, AZ USA
Thanks for the replies...I usually try to take care of my bits but I accidentally plowed through stucco with this one and ruined it instantly. I already bought a replacement but I thought if I could sharpen the old one for a backup....you know, on one of those rare Sunday afternoons when you are tinkering in your shop or garage while taste testing a few brews.

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#58901 - 11/23/05 10:16 PM Re: Sharpening a Step bit
iwire Offline
Moderator

Registered: 01/05/03
Posts: 4343
Loc: North Attleboro, MA USA
 Quote:
I usually try to take care of my bits but I accidentally plowed through stucco with this one and ruined it instantly.


That certainly stinks, and no doubt it did a number on the bit. That is frustrating.

 Quote:
I assume by Step Drills, you guys mean something like a Cone Cut?.


[img]http://images.google.com/images?q=tbn:N1nORLUIOJoJ:www.acetool.com/order/images/MVB_2034.jpg[/img]
_________________________
Bob Badger
Construction & Maintenance Electrician
Massachusetts

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