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Too big to fail
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Welders: tool for grinding welds in tight areas?
I've a need to grind down some welds in fairly tight spaces. I've tried a Dremel, but it doesn't seem to have the 'oomph' I need.
Here's an example - this will get welded all the way around, and will need cleanup. ![]()
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"You go to the track with the Porsche you have, not the Porsche you wish you had." '03 E46 M3 '57 356A Various VWs |
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Parrothead member
Join Date: Jul 2003
Location: Monmouth county, NJ USA
Posts: 13,831
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Pneumatic die grinder. that what i always use. Straight and angled.
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Vinny Red '86 944, 05 Ford Super Duty Dually '02 Ram 3500 Diesel 4x4 Dually, '07Jeep Wrangler '62 Mercury Meteor '90 Harley 1200 XL "Live your Life in such a way that the Westboro Baptist Church will want to picket your funeral." |
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Yep, you have to use pneumatic tools with plenty of air behind it.
You can do some serious metal removel with a 4" electric grinder but any precision work needs a 1/4" straight and/or 90° die grinder. Metal burrs will take off metal fast. Followed by sanding rolls and disks. I'm not a fan of stones on a die grinder.
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2014 Cayman S (track rat w/GT4 suspension) 1979 930 (475 rwhp at 0.95 bar) |
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Control Group
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battery dremel or plug in?
I have a plug in one that has PLENTY of beans, if you like you can borrow it, assuming I can put my hand to it, but the air tools are the way to go
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Join Date: May 2005
Location: Cridersville, OH
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75 911 Indian Red- RUFWAN2B 2000 Boxster 2000 & 2007 Dobies www.stahlwerks.com Cages and preparation for your Porsche “People who never make mistakes must get tired of doing nothing” Bill : The origin of the orgy of Porsche |
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Join Date: May 2002
Location: St Louis
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Rick 88 Cab |
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Yep, die grinder will do it. I got one just like above.
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Jacksonville. Florida https://www.flickr.com/photos/ury914/ |
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Too big to fail
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I already have a nice selection of die grinders; I might look into the baby belt sander.
I have large and small twist-loc arbors; I take a work out sanding disk and cut it down to the small arbor size, which works well for some of the smaller stuff. ![]() ![]()
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"You go to the track with the Porsche you have, not the Porsche you wish you had." '03 E46 M3 '57 356A Various VWs |
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You do not have permissi
Join Date: Aug 2001
Location: midwest
Posts: 39,842
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I mostly use the flat and the side of a cut-off or thick wheel. Regular drill. For corners, something like this Grinding, Point, 3/16in - Rotary Tool Accessories - Finishing Tools - 3DY26 : Grainger Industrial Supply
The stones disintgrate and find their way under saftey glasses and in corners. Don't know what that latest project is but I'll guess it will turn out sweet. |
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Formerly reformed
Join Date: Jan 2008
Location: Rutherfordton NC
Posts: 2,424
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Carbide bits. They come in all shapes and sizes and I've found them the best fit for tight spots including inside corners.
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1968 911P (Paperweight) |
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Join Date: Nov 2005
Location: CA
Posts: 7,286
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air grinder or electrical angle grinder. I use it all the time now.
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Fat butt 911, 1987 |
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MAGA
Join Date: May 2004
Posts: 10,769
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4" grinder with hard disks, soft disks, flap wheels etc
Straight die grinder with thin disks, carbide burrs, stone wheels, unitized soft wheels etc Angle die grinder with various attachments Files Etc...... I have all of the above and more, but for what you are doing, you might find a 1.5" expanding rubber drum type arbor with COARSE abrasive sleeves mounted to a straight die grinder useful to grind/sand off most of the high spots.
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German autos: '79 911 SC, '87 951, '03 330i, '08 Cayenne, '13 Cayenne 0% Liberal Men do not quit playing because they get old.... They get old because they quit playing. |
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Join Date: Oct 2004
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I also got a new angle grinder, a DeWalt. The baby belt sanders are good for small jobs, but that weld bead will be plenty hard.
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Almost Banned Once
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I bought a "Fein Multimasterr" about 4 years ago to remove the grout between tiles in my bathroom. Worked perfectly.
It's fantastic, made in Austria (not cheap) and it can do jobs no other power tool can do. It vibrates so it's very safe... Like a plaster cutter in a doctors office. Since it's release other brands have copied it and there are now lower cost options but the "Fein" has the best range of tools and attachments. ![]() ![]() ![]()
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- Peter |
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Formerly reformed
Join Date: Jan 2008
Location: Rutherfordton NC
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None of these tools would allow you to grind in a veeeery tight place. Go to your local welding supply store and ask for the carbide bits. They're about $18 each. You could even grind inside a 1/4" hole if you had the urge.
They're the only tool I'd use to remove a bead such as you've shown in the pic without worrying about bitting the surround metal.
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1968 911P (Paperweight) |
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Almost Banned Once
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FEIN MULTIMASTER SANDING FINGER 7MM (2 PACK) #63806159023
* Especially long and narrow sanding fingers for use in extremely tight and hidden spots, in channels, grooves, openings, folds and joints * Also for mould-making, in concave and convex forms * The sanding finger can be bent to work on any work piece ![]()
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- Peter |
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Join Date: Nov 2006
Location: SOUTHERN OREGON
Posts: 207
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try a 1 or 2 mm cut off wheel thats worn down to about 1 inch circumfrence. worked the best for stability and pricefor me
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86 carrera coupe, track & daily driver. 7 other unimportant cars (mostly VW's) 1 very cool dog. RIP my friend no kids, no wife, HELL YEAH. |
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You do not have permissi
Join Date: Aug 2001
Location: midwest
Posts: 39,842
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Save those worn out cut-off wheels.
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