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Colt drills

bellringer

bellringer

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Right I have two colt drill 7mm and 27/64 I have had them for about 2 years and they are ok but not great so took them to drill services and for £9.60 they have reground them on the same profile as before and now they are sharper then when I bought them I have also seen on Iap that they say they are not re grind able well they are wrong the price is high but they have a better grind on them then when colt made them




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Penpal

Penpal

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Sharp as ever Alex:thumbs: mate I am not a user of Colt the drills I use are the Drill Point drills after the large working life of them is over I belt them in the bin but they only cost me around two of your pounds for the 7mm bit.

Happy for you if its a saving for you also for sharing your experiences.

Peter.
 
Buckeye

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I bought a colt 7mm drill bit when I first started doing pens, it is still in it's tube having been used 2 or 3 times, it flexes like I have never seen a drill bit flex before. They have a premium on them that I am not prepared to pay.

I use normal drill bits and sharpen them to a split-point profile which is effectively what the colt uses. When they are split-point they cut cooler and faster than normal chisel point bits. I haven't tried to sharpen the colt it's still sharp, it's for sale if anyone is savvy/mug enough to want it:thumbs:

Peter
 
bellringer

bellringer

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The small ones are not very good but the bigger ones are better


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Buckeye

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I bought a colt 7mm drill bit when I first started doing pens, it is still in it's tube having been used 2 or 3 times, it flexes like I have never seen a drill bit flex before. They have a premium on them that I am not prepared to pay.

I use normal drill bits and sharpen them to a split-point profile which is effectively what the colt uses. When they are split-point they cut cooler and faster than normal chisel point bits. I haven't tried to sharpen the colt it's still sharp, it's for sale if anyone is savvy/mug enough to want it:thumbs:

Peter

Computer stalled and it's a double post.
 
Vic Perrin

Vic Perrin

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Am I reading this post correctly £9.60 to sharpen one 7mm Drill

I have a 7mm jobber drill and have been touching it up on the grinder for the last 2 or 3 years at least. Done loads of drilling with it it must have cost me all of £1

:thinks:Vic:thinks:
 
bellringer

bellringer

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Vic Perrin said:
Am I reading this post correctly £9.60 to sharpen one 7mm Drill

I have a 7mm jobber drill and have been touching it up on the grinder for the last 2 or 3 years at least. Done loads of drilling with it it must have cost me all of £1

:thinks:Vic:thinks:
Click to expand...
The colt drills are £10 each for 7mm and £17 for the other one so it dose pay
 
paulm

paulm

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I'm with you Vic but wouldn't even bother sharpening them, I'd buy a new one when I needed it. I've never needed to yet.
 
Buckeye

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bellringer said:
But if you then include delivery and the 27/64 it makes more sense to get them sharpened
Click to expand...

It makes more sense to use different bits:thumbs:, but if you are addicted to them then it's a fix worth paying, just.

Peter
 
Jim

Jim

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I have to admit i find these bits very good on plastic blanks, and totally crap with wood, i have both of the sizes that Alex mentions for a few years, and both still go through plastic like butter .. :thumbs:
 
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