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Cars & Coffee Killer
Join Date: Sep 2004
Location: State of Failure
Posts: 32,246
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How to chamfer/debur steel?
After drilling a hole through steel, what is the best way to remove the excess steel on the edge of the hole?
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Some Porsches long ago...then a wankle... 5 liters of VVT fury now -Chris "There is freedom in risk, just as there is oppression in security." |
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08-01-2010, 05:20 PM
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Registered
Join Date: Sep 2008
Posts: 10,771
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a countersink leaves a nice chamfer
a de burring tool comes in handy Amazon.com: General Tool 482 Swivel Head Deburring Tool with Metal Handle: Home Improvement sometimes in a pinch you can carefully countersink/chamfer the hole with a larger drill
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"The primary contribution of government to this world is to elicit, entrench, enable, and finally to codify the most destructive aspects of the human personality." Jeffrey Tucker |
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08-01-2010, 05:26 PM
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Formerly reformed
Join Date: Jan 2008
Location: Rutherfordton NC
Posts: 2,424
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It depends on the application. I use everything from rt/bast files and sandpaper to the aforementioned deburring tool. Sometimes even wirebrush on a zizz wheel.
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1968 911P (Paperweight) |
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08-01-2010, 06:58 PM
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Quote:
An at least four sizes bigger drill bit in your hand.
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A nose heavy airplane flies poorly, a tail heavy plane flies once. |
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08-01-2010, 06:59 PM
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Senior Member
Join Date: Jun 2000
Location: N. Phoenix AZ USA
Posts: 28,943
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Quote:
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2013 Jag XF, 2002 Dodge Ram 2500 Cummins (the workhorse), 1992 Jaguar XJ S-3 V-12 VDP (one of only 100 examples made), 1969 Jaguar XJ (been in the family since new), 1985 911 Targa backdated to 1973 RS specs with a 3.6 shoehorned in the back, 1959 Austin Healey Sprite (former SCCA H-Prod), 1995 BMW R1100RSL, 1971 & '72 BMW R75/5 "Toaster," Ural Tourist w/sidecar, 1949 Aeronca Sedan / QB |
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08-01-2010, 07:36 PM
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Double Trouble
Join Date: Nov 2002
Location: North of Pittsburgh
Posts: 11,705
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Files, emory cloth, wet sand paper with oil....
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08-01-2010, 07:51 PM
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Registered
Join Date: Apr 2002
Location: NoCal
Posts: 2,416
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Single flute countersink:
 The burr knife in the link above works well, as will assorted files. |
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08-01-2010, 07:57 PM
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Join Date: Sep 2008
Posts: 10,771
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Quote:
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"The primary contribution of government to this world is to elicit, entrench, enable, and finally to codify the most destructive aspects of the human personality." Jeffrey Tucker |
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08-01-2010, 08:16 PM
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A counter sink or bigger drill is what I use on holes but you could also use a deburring tool:
 The little sharp, hard blade rotates and you just drag along the sharp edge of freshly machined or drill piece.
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2014 Cayman S (track rat w/GT4 suspension) 1979 930 (475 rwhp at 0.95 bar) |
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08-02-2010, 02:59 AM
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MAGA
Join Date: May 2004
Posts: 10,769
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I use bigger drill bits, countersink tools, debur tools, sharpened triangle files, small jewlers files etc. Most often however if working at my drill press, I simply grab a larger drill bit chuck it in my second drill press and often just hold the part up against the rotating drill bit to lightly chamfer the hole.
This isn't rocket science and many methods will work depending on what you have handy at the moment.
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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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08-02-2010, 05:36 AM
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1979 Porsche 911SC
1979 Porsche 930 3.4
