Mathematics Proof?

[rhull]

Prove why 10 is 10? ;D

Apparently 10mm is not always 10mm. It depends on some sort of Clintonesque definition of what "is" is. Heheh.

The moral: a 10mm drill from one company doesn't necessarily work with a 10mm kit from another.

[sachbvn]

Time to get out the digital calipers or mic and see which one is "really" 10mm....that is IF your mic or caliper is correct!

Zac

[rhull]

I don't have digital calipers or a micrometer. Just a dial caliper, and I'm too lazy now to figure it out.

There was a stressful moment as I tried to glue the tube in the blank, but a hammer and some threatening words sorted it all out. ;D

[Doug B]

LMAO Rob,,,been there done that! I hate it when you expect one thing and get something else. Seems to be happening more and more these days as more and more chit is coming from China

[TDHofstetter]

VERY SLIGHTLY (12 thousandths) smaller than a 13/32".

It's typical for a drill bit to drill a hole slightly larger than its own diameter... but it's pretty rare for one to drill a hole SMALLER than its own diameter.

When you're tryin' out a new drill bit, DO dry-fit a tube in the hole to be sure it goes.

Next time you use that drill bit (if you haven't kicked it to the curb already), ream the blank with it a little by sliding the blank up & down the drill bit a few times with the drill bit spinning. Or just kick that one to the curb & get a better 10mm drill bit. Or follow it with a 13/32". Surely - you don't s'pose - it wasn't really a 3/8"?

[sachbvn]

Isn't it funny how fast you grab for that soft mallet when you've already applied the CA glue and the brass tube is sticking it's head out still!! lol - I figured right quick - push it all the way in with a twisting motion in one movement.


Zac

[rhull]

Nov 15, 2009 21:56:47 GMT -6 TDHofstetter said:

When you're tryin' out a new drill bit, DO dry-fit a tube in the hole to be sure it goes.

Next time you use that drill bit (if you haven't kicked it to the curb already), ream the blank with it a little by sliding the blank up & down the drill bit a few times with the drill bit spinning.

I did! I did! I did exactly that! I thought I had made up for the difference, and it seemed fine in dry fit. I can only think that I dry fit it in one direction, and then glued it putting the tube in the opposite hole where it didn't fit as smoothly.

[TDHofstetter]

I've had that happen - ream a blank, dry-fit a tube goin' one way, then have it jam at the worst possible moment going in the other end. I've hadda' rip a blank apart to get my tube back, too...

BTW... I just got some unusual positive feedback from Mr. Rogers; it seems that my software is now doin' what it's 'posed to do, and he's tickled deathless & gonna' pitch the product to some REALLY BIG clients. If the sale goes through, he's making sounds about full-time development.

[Joe Lyddon]

Hey Tim... that sounds like a wonderful opportunity / break!

Sounds like that would stop the Plane Kit / Plane venture...

Hope you "hit it"!

[TDHofstetter]

Na, nothin' gonna' stop that venture at this point - I just bought more tooling to make it happen.

[Doug B]

I use 15 minute 2 part epoxy for gluing the tubes. It is much more forgiving than CA glue if/when you have an issue.

I also think it may have better holding ability than CA but I don't have any proof of that...I just heard that CA can sometimes come loose if the blank gets too hot from sanding/finishing.

I just figure I need all the help I can get, so I use the epoxy and wait at least 8 hours. That's probably overkill, but I really, really hate to lose a blank

[dicklaxt]

Aha !!!!!,I'll bet the problem is bit wobble but never having turned a pen I wouldn't bet on it.

[TDHofstetter]

Nov 16, 2009 2:10:17 GMT -6 Doug B said:

I use 15 minute 2 part epoxy for gluing the tubes. It is much more forgiving than CA glue if/when you have an issue.

Another completely suitable glue for the tubes, if you don't like the speed & fragility of CA but don't like the waste & mess of 2-part epoxy, is polyurethane (Gorilla-style) glue. It bonds well to the tubes & nearly ANY wood alike, and it's very easy to clean back up - gentle on your tools.

[sawduster]

Timmer said, "When you're tryin' out a new drill bit, DO dry-fit a tube in the hole to be sure it goes. "

Some of the Bethlehem Olive Wood I've gotten has been quite moist. I learned the hard way that the heat from drilling causes some drying of the wood inside the recently drilled hole. We all know that as wood dries it shrinks and the drilled hole gets smaller. I now check every blank to the tube before slathering on the CA. A quick return trip to the drill press to "ream" out the hole corrects any that are too tight for the tube.

[Doug B]

Nov 16, 2009 8:00:50 GMT -6 TDHofstetter said:

Another completely suitable glue for the tubes, if you don't like the speed & fragility of CA but don't like the waste & mess of 2-part epoxy, is polyurethane (Gorilla-style) glue. It bonds well to the tubes & nearly ANY wood alike, and it's very easy to clean back up - gentle on your tools.

My brother uses Gorilla glue for pen tube glue ups, but I had a terrible experience with it a couple years ago. I never got over it I guess, cause I just have not wanted to try it again. It's probably a good alternative, but I still have a poor opinion of it.

[Doug B]

Nov 16, 2009 9:17:51 GMT -6 sawduster said:

Timmer said, "When you're tryin' out a new drill bit, DO dry-fit a tube in the hole to be sure it goes. "

Some of the Bethlehem Olive Wood I've gotten has been quite moist. I learned the hard way that the heat from drilling causes some drying of the wood inside the recently drilled hole. We all know that as wood dries it shrinks and the drilled hole gets smaller. I now check every blank to the tube before slathering on the CA. A quick return trip to the drill press to "ream" out the hole corrects any that are too tight for the tube.

I have had exactly the same thing happen Jerry, except not with BOW. I learned the hard way to always test the dry fit before glue up.