spot weld drill bits, what size and where to buy? |
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spot weld drill bits, what size and where to buy? |
jonwatts |
Apr 29 2004, 03:41 PM
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#1
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no rules, just wrong Group: Benefactors Posts: 2,321 Joined: 13-January 03 From: San Jose, CA Member No.: 141 |
I'm removing stuff from the car (engine shelf, seat hinges, various brackets).
What size spot weld drill bits should I get? Anyone know if they sell them at Home Depot or OSH? Otherwise I'll have to make a special trip to Harbor Freight (far away) or a welding supply store (over-priced). thx peeps! |
Britain Smith |
Apr 29 2004, 04:16 PM
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#2
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Nano Member Group: Members Posts: 2,354 Joined: 27-February 03 From: Hillsboro, OR Member No.: 364 |
I bought one from Scott Yeaman...talk with him (650)328-8169. I can pick some up for you if you want.
-Britain |
TimT |
Apr 29 2004, 04:40 PM
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#3
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retired Group: Members Posts: 4,033 Joined: 18-February 03 From: Wantagh, NY Member No.: 313 |
Take a trip to your Local Auto Body Store, they usuall have the spot weld cutters...
If not a good cobalt or Ti drill bit about 3/16 will do the trick.... watch where your drilling.... just through one ply, sometime a cold chisel is needed to persuade the seam apart.. Local Auto Body Store Favorite Local Auto Body Store FLABS LOL (IMG:style_emoticons/default/beerchug.gif) |
928er |
Apr 29 2004, 05:07 PM
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#4
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Newbie Group: Members Posts: 7 Joined: 28-April 04 From: Chas, SC Member No.: 1,995 |
By far the best spot weld drill I've ever used is a set of Black & Decker Bullet drills.
These cut a flat square hole like the spot weld cutters, but there is a pilot drill built into the tip which eliminates walking when the main cutting surface touches down; much more precise that the spot weld cutters. The pilot tip is small enough that a quick trigger with the MIG fills it right back in, or, you can just push the pilot tip through the second layer of steel to locate and make nice clean factory-position welds from the backside. I got a small index of 14 bits (1/16-1/2), got 'em at H-D several years back. |
seanery |
Apr 29 2004, 05:13 PM
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#5
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waiting to rebuild whitey! Group: Retired Admin Posts: 15,852 Joined: 7-January 03 From: Indy Member No.: 100 Region Association: None |
Eastwood lists them in their catalog.
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928er |
Apr 29 2004, 05:19 PM
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#6
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Newbie Group: Members Posts: 7 Joined: 28-April 04 From: Chas, SC Member No.: 1,995 |
Here's what the tips of the bullet bits look like, this is tha 1/2" captured larger than life on the flatbed.
Attached image(s) |
jonwatts |
Apr 29 2004, 05:35 PM
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#7
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no rules, just wrong Group: Benefactors Posts: 2,321 Joined: 13-January 03 From: San Jose, CA Member No.: 141 |
QUOTE(seanery @ Apr 29 2004, 03:13 PM) Eastwood lists them in their catalog. Yeah but I'm spoiled by being able to get just about anything locally. I don't want to go mail order and wait for shipping on consumables unless I have to. The Black & Decker bits look interesting though I'm not sure who still carries them (they seem like they might be discontinued which is a sure sign that they probably worked as advertised). I may look for them tonight. Thanks for the tips, keep 'em coming if you have more! |
TheCabinetmaker |
Apr 29 2004, 05:40 PM
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#8
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I drive my car everyday Group: Members Posts: 8,300 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
As a few others have already said, local auto body supply store. One that serves the local professionals. You should find what you need.
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seanery |
Apr 29 2004, 05:48 PM
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#9
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waiting to rebuild whitey! Group: Retired Admin Posts: 15,852 Joined: 7-January 03 From: Indy Member No.: 100 Region Association: None |
jonboy, if they are discontinued, then HarborFreight may be the place to find them.
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RAR |
Apr 29 2004, 07:12 PM
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#10
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Member Group: Members Posts: 189 Joined: 24-January 04 From: Washington state Member No.: 1,598 |
Northern tools has the solid type, singles or set of four. Those bullet drills, if still available, look pretty good too.
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Bleyseng |
Apr 29 2004, 07:30 PM
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#11
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Aircooled Baby! Group: Members Posts: 13,034 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
Eastwood sells em in 3/8th or 1/2" diameter. This is the kind with the center point and the replaceable cutters. Easy to use and add new panels using these.
Geoff |
928er |
Apr 29 2004, 07:34 PM
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#12
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Newbie Group: Members Posts: 7 Joined: 28-April 04 From: Chas, SC Member No.: 1,995 |
On those B&D bullet bits, they still sell them but under the DeWalt name now "DeWalt Pilot Point"
Guess who just got back from Lowes? (IMG:style_emoticons/default/biggrin.gif) They had sets and individuals. |
TimT |
Apr 29 2004, 07:40 PM
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#13
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retired Group: Members Posts: 4,033 Joined: 18-February 03 From: Wantagh, NY Member No.: 313 |
Those are (The eastwood) the rota-broach type bits.... they drill out a spot weld really well..
But when you weld your new panel in you have a 1/2 or 3/8th hole to weld doesnt look much like a factory spot weld.. the rota-broach bits work great.. but you wont be able to mimic "original" spot welds... dont know if the matters much at all to you though. |
ChrisFoley |
Apr 29 2004, 07:49 PM
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#14
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I am Tangerine Racing Group: Members Posts: 7,922 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None |
QUOTE(928er @ Apr 29 2004, 07:07 PM) By far the best spot weld drill I've ever used is a set of Black & Decker Bullet drills. (IMG:style_emoticons/default/agree.gif) Totally! Thanks for the tip on the Dewalt name thing. I was worried they really were NLA. |
Qarl |
Apr 29 2004, 07:50 PM
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#15
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Shriveled member Group: Benefactors Posts: 5,233 Joined: 8-February 03 From: Florida Member No.: 271 Region Association: None |
I just used a wide angle drill bit (108 degrees I think) and a hammer. Worked like charm!
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Bleyseng |
Apr 29 2004, 08:40 PM
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#16
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Aircooled Baby! Group: Members Posts: 13,034 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
I use the point rotobroach bits to REMOVE panels drilling only the first layer of metal. Leave the second layer of metal panel to weld the new panel to.
Then grind off any remaining metal left behind. The NEW panel gets small 1/4" holes drilled in it and then I puddle weld it in. Looks pretty close and holds like there is no tomorrow. Geoff |
dmenche914 |
Apr 29 2004, 11:54 PM
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#17
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Senior Member Group: Members Posts: 1,212 Joined: 27-February 03 From: California Member No.: 366 |
i got a neat spot weld drill, It was more like a mini hole saw, about 1/4 inch dia. It worked great, i believe i got it a Tool Land ( I think thats in San Carlos, just North of you, give them a call first, as it was many years ago. The hole saw style is really neat, and has two sided replacable bits on the shank. You can buy the bit seperatly, it was fairly inexpensise, but cut many many welds, good quality.
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