V drill bit

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RogerGarrett

RogerGarrett

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I recently purchased the chrome "pocket pen" kit that came with no instructions. It would appear that the kit is identical to the Bearea Purse Pen - and the instructions I found online for that kit states that the appropriate drill bit is the V bit.

I've never heard of a V bit - but then, I'm still learning. Anyone have some advice?

Best,
Roger Garrett
 
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kirkfranks

kirkfranks

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There are letter size drill bits that are in between standard fractional sizes.

Below is from the Penventory drill bit cheat system.
If you have a 3/8 you should be pretty close.

T (0.3580) (--0.0190)
23/64" (0.3594) (--0.0176)
U (0.3680) (--0.0090)
3/8" (0.3750) (--0.0020)
V (0.3770) <--- Trying to match this one!
W (0.3860) (+0.0090)
25/64" (0.3906) (+0.0136)
10mm (0.3937) (+0.0167)
X (0.3970) (+0.0200)

Edit in:
By the way here is a link to the Drill bit cheat system.
It is a very usefull help.
http://www.penventory.com/inv.pl?command=drillbitcheatform
 
railrider1920

railrider1920

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NW Fla Panhandle, USA.
Originally posted by kirkfranks


T (0.3580) (--0.0190)
23/64" (0.3594) (--0.0176)
U (0.3680) (--0.0090)
3/8" (0.3750) (--0.0020)
V (0.3770) <--- Trying to match this one!
W (0.3860) (+0.0090) <---Why not this one if available
25/64" (0.3906) (+0.0136)<----Or this one if available
10mm (0.3937) (+0.0167)
X (0.3970) (+0.0200)
Click to expand...

If you are trying to pick a drill bit to use in place of the one called for, shouldn't you go larger than the size the instructions call for, instead of going to a smaller size? Or is 0.0020" not that much smaller that it will still allow the tube to be inserted?

Thanks
 
randyrls

randyrls

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Harrisburg, PA 17112
Originally posted by railrider1920

Originally posted by kirkfranks


T (0.3580) (--0.0190)
23/64" (0.3594) (--0.0176)
U (0.3680) (--0.0090)
3/8" (0.3750) (--0.0020)
V (0.3770) <--- Trying to match this one!
W (0.3860) (+0.0090) <---Why not this one if available
25/64" (0.3906) (+0.0136)<----Or this one if available
10mm (0.3937) (+0.0167)
X (0.3970) (+0.0200)
Click to expand...

If you are trying to pick a drill bit to use in place of the one called for, shouldn't you go larger than the size the instructions call for, instead of going to a smaller size? Or is 0.0020" not that much smaller that it will still allow the tube to be inserted?

Thanks
Click to expand...

A sheet of paper is .004" I try to make the hole as snug as possible. This is especially important on El Grande (and similar) pens where the material is thin after finishing the blank. I usually try slightly smaller bits first and then larger bits. When I find the correct size, I write it down on the instructions. I find the 115 bit sets very nice.

Hope this helps.
 
randyrls

randyrls

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Originally posted by railrider1920

Thanks Randy,
That makes sense.
That set is nice. Just about every bit one could need. Too bad they don't have the same set in metric.
Click to expand...

You can get metric bit sets. Usually they start at 1mm and go to 13mm by .5mm steps. They are much more expensive and better quality!

You can find *really*, REALLY odd bit sizes if you take a look at an industrial supplier. How about a 1/2" -.005 bit, or a 12.30mm?

You can judge the quality of a drill bit by examining the area where the flute ends. On high quality (Chicago, Cleveland, and Norseman) bits the transition will be smooth and even with no milling marks. On the cheapie set like I have, the place where the milling machine stopped will be obvious.
 
S

sbell111

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Jan 16, 2008
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Franklin, TN
Originally posted by DocStram

Yep ... time for you boys to make a visit to your local friendly HF. You'll want either this one:

http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=1611

or, this one:

http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=47653

They go on sale frequently, and . . . if you're timing is right . . you'll have a HF 15% discount coupon. :D
Click to expand...
I picked one of those sets up yesterday (using my coupon). It really helped out with some bullet pens I was making (I think I used five or six different sizes before I was done).

Strangely, my set was missing the second smallest fractional bit. Perhaps it is laying down in one of the racks, I just couldn't find it. I'm not too concerned about it as I'm unlikely to ever need that size.
 
JimB

JimB

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Mar 18, 2008
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West Henrietta, NY, USA.
I bought this set from HF. After opening several of them in the store I realized the "missing" bits were there. They were just rolling around somewhwere in the box. Kind of hard to see as they are so small.
 
makaiolani

makaiolani

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Jan 6, 2008
Messages
435
Location
Honolulu, HI, USA.
Originally posted by RogerGarrett

I recently purchased the chrome "pocket pen" kit that came with no instructions. It would appear that the kit is identical to the Bearea Purse Pen - and the instructions I found online for that kit states that the appropriate drill bit is the V bit.

I've never heard of a V bit - but then, I'm still learning. Anyone have some advice?

Best,
Roger Garrett
Click to expand...
You can use a 9.5mm or a 3/8.
 
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