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12-06-2019, 04:31 AM
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Join Date: Nov 2015
Location: Calgary, Alberta
Posts: 99
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Proper use of wheel
Can one of you, the ?experienced? guys, post a couple of pictures of properly deburred parts using 6? the 3M 7A wheel?
Thank you in advance.
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Nedim Bek
Almost time.
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12-06-2019, 07:22 AM
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Join Date: Aug 2019
Location: Texas
Posts: 15
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Also, if anybody has links to deburring wheels they mounted in their drill press or die grinder, that would be VERY helpful.
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12-06-2019, 08:06 AM
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Join Date: Apr 2013
Location: Clarkston, MI
Posts: 375
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Here is a link for the 2" wheel.
http://www.cleavelandtool.com/3M-Cut.../#.Xeptjm5Fw6Y
You will need to order a mandrill as well. I have both the screw on and bolt on types. Both work well. I don't recall exactly where I got mine, but believe HF has them for a few bucks.
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Building started Oct 5th 2014, Flying since 1/16/2020
http://www.mykitlog.com/leok
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Last edited by leok : 12-06-2019 at 08:15 AM.
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12-06-2019, 12:05 PM
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Join Date: Aug 2016
Location: Asheville, NC
Posts: 2,104
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Cratex?
Do any of you guys use Cratex products for deburring? When I was a machinist (in another life) we used them all the time. https://www.cratex.com/
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(2020 dues paid)
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12-06-2019, 12:52 PM
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Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 5,297
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I use files. Can use fine for many jobs, course for some of the rough stuff from the factory punches/lasers. I use drill bits for holes use round files of varying sized for inernal curves, crannies, etc.
I shoot for smoth, not necessarilly super smooth, unless the edge will be visible or touched.
Larry
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N64LR - RV-6A / IO-320, Flying as of 8/2015
N11LR - RV-10, Flying as of 12/2019
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12-06-2019, 02:03 PM
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Join Date: Jan 2007
Location: Battleground
Posts: 4,348
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Quote:
Originally Posted by snopercod
Do any of you guys use Cratex products for deburring? When I was a machinist (in another life) we used them all the time. https://www.cratex.com/
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What?s the substrate? With aluminum, it?s as much about the carrier or substrate as it is the abrasive. Aluminum ?loads? up readily, that is why Scotchbrite products works so well, they carry the abrasive in loose, open webbed, substrate that allows the material to ?exit?.
This product looks like it might load up easily but I have never used it.
Like a grinding wheel, which works great on steel, It does not work on aluminum.
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Smart People do Stupid things all the time. I know, I've seen me do'em.
RV6 - Builder/Flying
Bucker Jungmann
Fiat G.46 -(restoration in progress, if I have enough life left in me)
RV1 - Proud Pilot.
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12-06-2019, 04:13 PM
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Join Date: Aug 2016
Location: Asheville, NC
Posts: 2,104
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Quote:
Originally Posted by JonJay
What?s the substrate?
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It's some kind of rubber. It doesn't load up. I really don't know how well it performs on aluminum, but I thought I would bring it up.
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(2020 dues paid)
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12-06-2019, 04:38 PM
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Join Date: Dec 2017
Location: Southern Maryland
Posts: 134
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I'm probably in the "deburr more than I need to" category. I too wonder if I'm spending too much time doing it but on the other hand I hear from experienced builders that a big chunk of the build hours winds up being some type of deburring task.
For thin skin edges I run a file over them until the shear marks are mostly gone, then sand smooth with 320 emory cloth and finish with a wipe of scotch brite hand pad. For the substructures, I'll use some form of 3m wheel (6" on the bench, 2" or 1" in a die grinder). Intricate areas like the LE/tank ribs get a flossing with emory cloth and man that took forever. Lightening holes get the small 3m wheel. Everything usually gets a final touch up with a hand pad.
I always struggle to decide if I've deburred a rivet hole enough with my speed deburr tool. light pressure, 1-2 turns is all I do and I seem to always get just the smallest ring of shiny around each hole
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RV-7:
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12-06-2019, 05:20 PM
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Join Date: Oct 2007
Location: Pensacola, FL & 2R4, Loveland, CO
Posts: 222
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I wonder what Cessna does. Will have to look into a wing at the ribs.
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120500
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12-06-2019, 09:27 PM
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Join Date: Oct 2015
Location: Casa Grande, AZ
Posts: 18
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I use a 90 deg die grinder with 3M roloc type surface conditioning disk (scotchbrite) almost exclusively. typically one pass along the the edge will do the job. I have one of the 3M 7 inch de-burring wheels that I've only used a couple of times. Files and emery cloth are also beneficial in some instances.
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Thierry Allred
RV-9
Empennage complete
Working on wings
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