Spot Weld Drill Bits, Help me buy the right thing |
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Spot Weld Drill Bits, Help me buy the right thing |
Richard Casto |
Mar 16 2006, 08:37 PM
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#1
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Blue Sky Motorsports, LLC Group: Members Posts: 1,465 Joined: 2-August 05 From: Durham, NC Member No.: 4,523 Region Association: South East States |
Don’t know much about them, but expect I am going to need one for my work on my 914. A quick Google search seems to show that they come in different sizes as well as styles? Some look like one piece bits while others look like a small bit that must go into some other type of chuck or mount. Some look very much like a regular drill bit and some look more like a hole saw with arbor. Some mention some type of depth gauges to prevent drilling out the metal behind the weld.
Recommendations on what style I should get? What size should I look for? Any tips or tricks on how to use these? |
d914 |
Mar 16 2006, 08:57 PM
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#2
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Advanced Member Group: Members Posts: 2,331 Joined: 12-July 03 From: Atlanta, ga Member No.: 904 Region Association: South East States |
6-8mm is the sizws I've heard bantered around. I have used the one with the double sided cutter with the center pilot post with litt success. Keep breaking the center guide...
Eastwood has one that is a integral center pilot with a flatter cutter. I'll be trying that next. Attached image(s) |
flesburg |
Mar 16 2006, 08:58 PM
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#3
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Senior Member Group: Members Posts: 506 Joined: 22-November 04 From: Pontiac, IL Member No.: 3,162 |
I have a couple. I like the solid ones best.
I bought mine from Eastwood. Go to www.eastwoodco.com They have a good selection of bodyworking tools, and their telephone order people are knowledgeable, or at least my experience with them has been good. |
Lou W |
Mar 16 2006, 09:37 PM
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#4
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"Here Kitty Kitty" my ass...... Group: Members Posts: 4,109 Joined: 9-May 04 From: Roseburg, OR. Member No.: 2,039 Region Association: Spain |
This is the one that I used, I thought it did a good job, I bought it at my local Automotive Paint Supply Store.
Blair Spotweld Cutter |
jimtab |
Mar 16 2006, 10:21 PM
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#5
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Advanced Member Group: Members Posts: 3,477 Joined: 5-January 03 From: Pacifica, California Member No.: 91 Region Association: Northern California |
Hey, those spotweld cutters look like re-bar drills..three cutters...those things cut FAST.....
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Lou W |
Mar 16 2006, 10:33 PM
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#6
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"Here Kitty Kitty" my ass...... Group: Members Posts: 4,109 Joined: 9-May 04 From: Roseburg, OR. Member No.: 2,039 Region Association: Spain |
yah, real fast, you have to be careful, they'll go right through everything, but they sure do a great job. They use a spring loaded pilot. |
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wbergtho |
Mar 17 2006, 12:02 AM
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#7
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Senior Member Group: Members Posts: 1,314 Joined: 28-April 03 From: Roberts, WI Member No.: 623 |
I use Blair 3/8" spotweld cutters (part # 13214). They're small hole saw bits. The only problem with them is they have no centering bit...so you have to hold your drill steady for a moment until it starts cutting in. I used then to remove my rear trunk floor and entire rear panel.
Bill Attached image(s) |
Lou W |
Mar 17 2006, 12:08 AM
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#8
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"Here Kitty Kitty" my ass...... Group: Members Posts: 4,109 Joined: 9-May 04 From: Roseburg, OR. Member No.: 2,039 Region Association: Spain |
I used model 13224, that one has the centering "Retactable Pilot" which prevents it from wandering, I just used a center punch and it lined up perfect. You can also adjust the depth of the cutter (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)
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John |
Mar 17 2006, 12:12 AM
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#9
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member? what's a member? Group: Members Posts: 3,393 Joined: 30-January 04 From: Evansville, IN (SIRPCA) Member No.: 1,615 Region Association: None |
I use the rotabroach version shown on that same page. They cut VERY fast.
I prefer the spring loaded center so that you can control the depth of cut. They seem to wander less than those solid bits and you can get replacement cutters for them. |
Porcharu |
Mar 17 2006, 01:46 AM
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#10
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Senior Member Group: Members Posts: 1,314 Joined: 27-January 05 From: Campbell, CA Member No.: 3,518 Region Association: Northern California |
Those work pretty good but keep a few spares on hand, you never when bang! Cutter teeth gone. I have the solid eastwood ones but have not tried them yet. I will soon when the seat mounts come out. |
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jonwatts |
Mar 17 2006, 02:15 AM
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#11
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no rules, just wrong Group: Benefactors Posts: 2,321 Joined: 13-January 03 From: San Jose, CA Member No.: 141 |
In a pinch Dewalt Pilot Point drill bits work about just as well and can be gotten on a Sunday afternoon at your local Lowes / Home Depot.
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dkos |
Mar 17 2006, 08:48 AM
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#12
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say, "RUST"! Group: Members Posts: 295 Joined: 1-December 04 From: Philadelphia, PA Member No.: 3,204 Region Association: None |
I agree...the Dewalt Pilot Points rule! They are cheap (compared to $20-$30 for the Eastwood bits), stay sharp for a long time and don't skip. I tried both of the bits sold by Eastwood. The spring loaded pilot broke within the first 15 spot welds I drilled out and the other bit is harder to keep centered and dulls quickly. The only drawback of the Dewalt bits is that you have to be more careful about going through the back piece. That little point that keeps you centered wants to go through the back piece before you get through the top piece. It cuts quickly and with a lot less effort than the Eastwood bits. Watch carefully while you are drilling...there will be a little puff of smoke when you get through the top piece. Stop when you see the smoke. You probably won't be completely through, but will be able to gently pry the two pieces apart and will only have a small indentation on the back piece. My $0.02...save your money...you can buy 5 Dewalt Pilot Points for the price of one Eastwood Spot Weld Bit...and they are good for drilling the plug-weld holes in your replacement pieces! ps: Hey...I'm over 100 posts! (IMG:http://www.914world.com/bbs2/html/emoticons/aktion035.gif) Attached image(s) |
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Richard Casto |
Mar 17 2006, 10:21 AM
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#13
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Blue Sky Motorsports, LLC Group: Members Posts: 1,465 Joined: 2-August 05 From: Durham, NC Member No.: 4,523 Region Association: South East States |
Thanks for the info guys. I am not sure which I am going to get yet, but I think I have the info I need to make a decision. (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)
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jimtab |
Mar 17 2006, 02:12 PM
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#14
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Advanced Member Group: Members Posts: 3,477 Joined: 5-January 03 From: Pacifica, California Member No.: 91 Region Association: Northern California |
Jon....How about at your local INDEPENDANT hardware store where you stand a better chance of the clerk having a brain......screw the boxes! |
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