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  #1  
Old 05-03-2021, 08:31 PM
JeremyL JeremyL is offline
 
Join Date: Aug 2020
Location: Maurertown,Virginia
Posts: 122
Default Hole deburring

Im thinking about buying a couple EZ burrs. Does anyone have experience with these. Are they fantastic additions or could they cause an over deburring issue? The idea of cutting deburring in half is quite enticing.
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  #2  
Old 05-03-2021, 08:34 PM
Presmini Presmini is offline
 
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Location: Palo Alto, Ca
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Definitely interested in this as well. Ive never heard of this..but whoa..those are cool.
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  #3  
Old 05-03-2021, 08:49 PM
xkape xkape is offline
 
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Location: East PA
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Those look slick, I've never seen them before. But for $80 (on amazon) I don't know if it's worth the extra hassle over just getting a countersink bit chucked into a drill and giving every hole a quick blip of the trigger on both sides.

I feel like I'd treat this the way I do my pneumatic cleco tool. Thought it was a great idea and worth the money but then I just don't ever use it.
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  #4  
Old 05-03-2021, 10:00 PM
ScottK ScottK is offline
 
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Location: SLC, UT
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I ran across a few YouTube videos of these (or tools like these) in action. They look...aggressive. It seems to me they're meant for working with considerably heavier and harder stuff than airplane aluminum. I think it's likely these would create overt chamfers or even enlarge the hole in thin sheet. But if you try, by all means, let us know how it works.
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  #5  
Old 05-04-2021, 05:14 AM
fixnflyguy fixnflyguy is offline
 
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Location: Winston-Salem, N.C.
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Default They have been around a while..but be careful!

I have used them for 40 years, and have them all the way up to 3/4". My day job is a structural specialist for heavy aircraft, and I spent a lot of time working with B737 thin skin failure issues. To the layman, de-burring is a magical novelty that yields a smooth beautifully produced hole, however in thin materials it can be problematic. Think of it this way..the skin/structure transfers load through the fastener into the adjacent structure aka, "bearing strength". When holes are de-burred, the area of the bearing surface is reduced and the condition of knife edging is increased, resulting in fastener movement/failure. In reality, we only try and remove the burr caused by drilling that interferes with stck-up. I have seen folks get really overboard and end up with a hole that has a small countersink on both sides. Those de-burr tools are great for in situ work where access is limited. I actually prefer to de-burr with scotchbrite, a 6 flute countersink with my fingers, or a thumb vixen file on thin stuff.
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  #6  
Old 05-04-2021, 05:56 AM
Reflex Reflex is offline
 
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Location: Kansas
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Not the EZ Burr brand, but I bought a set of these: https://www.yardstore.com/sheet-meta...in-and-out/new.

I don't use them often, but when they're needed, nothing else will do. Yes, they can be a bit aggressive but so can a basic deburring tool. Like any tool in your shop, learn what they will do and use appropriately.
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  #7  
Old 05-04-2021, 08:02 AM
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Ironflight Ironflight is offline
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If your goal is to sped things up, then a single-hole demurring bit (Cleavaland has them) stuck in a cheap electric screwdriver is a GREAT way to do a lot of holes in a short time in a non-overly-aggressive manner. If I need to do the back side of a hole, I like the Shaviv “S”-shaped bits - that tool comes out of the drawer occasionally, but when it’s needed, its really needed.There used to be lots of posts here about EZ-burs...mostly about how folks had broken them. You find lots of the larger sizes for sale in the flymarts at the big shows, built the#30 and #40 are rare finds - my guess is because the small ones break before they wear out.
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Last edited by Ironflight : 05-04-2021 at 10:59 AM.
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  #8  
Old 05-04-2021, 08:57 AM
JeremyL JeremyL is offline
 
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Location: Maurertown,Virginia
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Quote:
Originally Posted by Ironflight View Post
If your goal is to sped things up, then a single-hole demurring bit (Cleavaland has them) stuck in a cheap electric screwdriver is a GREAT way to do a lot of holes in a short time in a non-overly-aggressive manner. If I need to do the back side of a hole, I like the Shaviv S-shaped bits - that tool comes out of the drawer occasionally, but when its needed, its really needed.There used to be lots of pots here about EZ-burs...mostly about how folks had broken them. You find lots of the larger sizes for sale in the flymarts at the big shows, built the#30 and #40 are rare finds - my guess is because the small ones break before they wear out.
Thanks for the conversation guys, I do have and currently use the single hole and love it. Just curious if anyone has had plenty of build time with these on all thicknesses. I like to be on the cutting edge of technology (pun) haha. Spruce has several sizes of ez burr including the 30&40.
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  #9  
Old 05-04-2021, 01:46 PM
Bavafa Bavafa is offline
 
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Location: Sacramento, CA
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I do have a nearly full set and use them often. They are especially useful in the area that you may have limited access to the other side.
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  #10  
Old 05-08-2021, 03:57 PM
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9GT 9GT is offline
 
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I have these for deburring holes. 1/4 shank bits fit the hex receptacle nicely and I epoxy the bit in place.
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