what size drill bit for countersinking 24-703 case tube?

[cableguy]

I'm gonna countersink my case tube this weekend, anyone know off hand what size i need?

what size drill bit for countersinking 24-703 case tube?

[Guest avitt]

I use 11/64"

[freddy333]

Ditto - 11/64"

[316L]

11/64" ? and how many mm?

[freddy333]

4.33mm

[316L]

4.33mm

thanks, but

never, for the tube hole you need a driller of 2,7-3 mm.

[Guest avitt]

thanks, but

never, for the tube hole you need a driller of 2,7-3 mm.

That may be correct to actually drill the tube hole...But we were answering the original poster's question regarding which size bit to use to countersink the hole.

[316L]

That may be correct to actually drill the tube hole...But we were answering the original poster's question regarding which size bit to use to countersink the hole.

yes yes ok

i didn't know what is a countersink.

now i konw, thanks

[freddy333]

Sorry, I was going to add that the exact size for this bit is not that important since you are only countersinking and NOT drilling all the way through. The countersink is like a circular indentation around the actual hole where the tube sits so the crown can screw all the way down on the tube and fit to the case properly.

[cableguy]

hmmm it didnt go so well.....i guess the hole was too close to the bottom of the case?

this was a so called perfect sub case (ETA Noob)

anyway to avoid this next time? or am i out of luck.... I have one more Noob case that is the same

[Guest avitt]

That case can't be countersunk very much at all. The case is too thin, and the tube hole is biased towards the bottom. If you try this again, drill very gradually, until the cut approached the outer edge of the case...then stop. Also, make sure that your bit stays centered in the hole. Good luck.

[cableguy]

^ ok cool...how does one go about getting the crown to fit up against the case then?

[316L]

@ cableguy

how did you removed the tube?

was the tube glued?

details, please.

i will do the same work with the same watch.

[cableguy]

to remove the stock tube i used a 5/64 hex screw driver and just pushed in it so it would grab it and it twisted right out...

i have heard of people saying its glued so you results may be different then mine...

[316L]

5/64 hex ? is that a torx screwdriver?

what case no. do you have? F520117 ?

Edited August 18, 2007 by 316L

[cableguy]

yes and yes.

[316L]

yes and yes.

do you work with a dremel?

i don't know the english term.

have a look at... please.

http://de.wikipedia.org/wiki/Bild:Dremel300%2B400.JPG

[cableguy]

dremel is a rotary tool, i have one

[316L]

dremel is a rotary tool, i have one

and...

did you do the work with the dremel at the case?

Edited August 19, 2007 by 316L

[cableguy]

no, use a 11/64" drill bit to counter sink

i went too far down thou.

"drill very gradually, until the cut approached the outer edge of the case...then stop. Also, make sure that your bit stays centered in the hole. Good luck."

[jdavis]

The good side to this is that if you do open things up a bit too much, it is on the back side of the watch and it will be unseen while wearing it. Some of the cases that I have seen have the crown hole so close to the back edge of the case that it is impossible to countersink them without breaking it through the rear. There simply isn't enough material there to allow the countersink to stay within the case wall.

[cableguy]

the problem is i cant stand KNOWING its there. =(