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Is a hand chamfer worthwhile?

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choochoo_baloo11/03/2019 21:38:45
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164 forum posts
20 photos

[Beginner query]

I just watched a home workshop project on youtube and the machinist uses a hand chamfer for knocking the machined edge off of a drilled hole. Screenshot below.

chamfer.jpg

 

This seems a good tool for a gently debur. Can anyone recommend a decent brand - I've seen some pretty flimsy plastic ones after a brief google search.

Thanks in advance.

Edited By choochoo_baloo on 11/03/2019 21:39:08

Chris Gunn11/03/2019 21:52:49
270 forum posts
16 photos

Choo Choo, you can make one from a countersink and a flle handle, or fit a countersink in a tap wrench, I like the Noga style of de-burrer, readily available and it can do big holes as well as small ones.

Chris Gunn

Plasma11/03/2019 22:24:01
66 forum posts
6 photos

The noga type de-burring tools are very good. Great for thin material or cleaning the mouth of bored holes.

I have a few sizes to cope with different job sizes and prefer them to the style shown in the original post.

Regards mick

Bazyle11/03/2019 22:31:14
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4390 forum posts
184 photos

Didn't we have a 'what to do with old screwdriver' thread recently. One of them plus a bit of silver steel .............

Bandersnatch12/03/2019 00:12:35
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1126 forum posts
38 photos

I too use the Noga tools. I have a couple of internal versions and an external. Wouldn't be without them. To my mind they're cheap enough (and good enough) that I wouldn't bother with kludged-up substitutes.

YMMV

thaiguzzi12/03/2019 04:59:08
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498 forum posts
104 photos

Noga.

But i also have a dedicated tool holder with HSS at each end set at the same height (top rake) for internal & external chamfering only.

Makes a better job of it and but a couple of seconds to change toolholders.

FMES12/03/2019 06:17:56
539 forum posts
1 photos

I just use a twist drill thats been pushed into a wooden file handle - mostly for deburring holes before rivetting.

Cheap and simple.

For bigger holes one of these **LINK**

Regards

JasonB12/03/2019 07:07:26
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14864 forum posts
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I use one of these for holes 6-12mm

Smaller get done with one from the mini sets from Tracey, prefer this action as you just crank it round rather than twist, the small triangulat scraper is good too.

Anything bigger gets a Noga style curved blade round th edge

Mike Poole12/03/2019 08:34:50
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1753 forum posts
44 photos

The basics of how Clickspring made his hand countersink are in his video for D bit milling cutters **LINK** .

Mike

Zebethyal12/03/2019 09:02:36
179 forum posts

I use a countersink bit in a manual hand drill - something Tom Lipton of OX Tools is a big fan of, anything bigger or edges, I use a Noga style deburrer.

Martin Johnson 112/03/2019 09:27:10
106 forum posts
1 photos

I think there could be a book on de-burring methods. I have a selection of hook type deburring tools (Noga and similar), a very lashed up version of the OP's picture which is a broken stump of a largish drill shoved into a file handle.

However, my weapon of choice for lathe work is a triangular file, about 1/2" face width, shortened, ground to a point but with the file teeth left on the back half. This was inherited from my Dad who used to in industry to make Clearview Screens for the Navy. To use:

  • Internal holes - use the pointy end as a hand turning tool (no rest needed) to take off any burr.
  • External shoulders - use the file teeth end to knock off the aris.
  • Make sure Elfin Safety is not around.

Another good way of deburring multiple holes is a largish drill in the battery drill - you can do dozens of holes in the time it takes to type this screed.

Martin

John Haine12/03/2019 09:45:54
2376 forum posts
132 photos

+1 for the Noga deburrers with the little hooked blades - useful for both holes and edges.

Also the little "countersink in a handle" type. Also I have a triangular scraper in a collet-style holder bought from Proops years ago which I wouldn't be without though it is very adept at hiding itself.

Chris Trice12/03/2019 10:35:38
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1332 forum posts
9 photos
Posted by JasonB on 12/03/2019 07:07:26:

I use one of these for holes 6-12mm

Anything bigger gets a Noga style curved blade round th edge

Ditto. I recommend the exact same tools.

Hopper12/03/2019 11:56:15
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3288 forum posts
58 photos

I guess I must be a bodger. blush I just use a larger size drill bit grabbed out of the rack and gripped by the flutes.

Neil Wyatt12/03/2019 13:20:57
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15581 forum posts
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73 articles

I generally prefer a deburring tool with a rotating cranked insert even for holes down to about 6-8mm, although I do have a very clapped out Jacobs chuck with a shop-made 45-degree D-bit in it to hand. In truth I often use the end of a twist drill for small holes.

Neil

Bandersnatch12/03/2019 16:25:19
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1126 forum posts
38 photos
Posted by Neil Wyatt on 12/03/2019 13:20:57:

I generally prefer a deburring tool with a rotating cranked insert

It's the offset (cranked) geometry that does it for me on the Noga style hole deburrers. Perhaps because I have reduced feel/grip in my dominant hand due to nerve and circulation damage and I can rotate the whole hand rather than "twiddling" the tool with my fingers.

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