Measurement Needed

[GregD]

Has any one mesured the cap stud on the Euro style pen kits? It's evidently metric and I have no way to mesure it properly. Also, the thread per inch.
I need to make some of the inserts for the cap stud. I hate to buy a whole pen kit when all I need is the insert.

 

[Geo in Winnipeg]

Greg, CSUSA sells Euro stype cap studs. Hope this helps

http://www.woodturnerscatalog.com/cgi-bin/shopper?preadd=action&key=050-7053

 

[Fangar]

Originally posted by Geo in Winnipeg
<br />Greg, CSUSA sells Euro stype cap studs. Hope this helps

http://www.woodturnerscatalog.com/cgi-bin/shopper?preadd=action&key=050-7053

Cool idea. To bad that shipping on 10 of them from CSUSA is 6.50. LOL.

Fangar

 

[Old Griz]

Originally posted by Fangar
<br />

Originally posted by Geo in Winnipeg
<br />Greg, CSUSA sells Euro stype cap studs. Hope this helps

http://www.woodturnerscatalog.com/cgi-bin/shopper?preadd=action&key=050-7053

Cool idea. To bad that shipping on 10 of them from CSUSA is 6.50. LOL.

Fangar

If you ask them to they will ship via USPS which is cheaper...

 

[GregD]

George,
Yes, I know they sell the stud. What I need is the insert the stud screws into. I need to know the size and thread per inch of the stud so I can tap the hole.

 

[vick]

Not to sound negative but I have looked into taps for some of the other CSU pen parts and they do not seem to use standard tap sizes. I know Bruce Boone had offered to make customs taps at a decent price.


link to another thread on taps
http://www.penturners.org/forum/topic.asp?TOPIC_ID=7989&SearchTerms=,tap,for,snap,cap

 

[ctEaglesc]

4 mm metric will work but there is something about the threads, it seems tapered.
I use 4 mm "bolt" to make my own finials.(no shipping I get them at the hardaware store.)
Pick up a 4 mm tap and you are good to go.
I just made one last nite.
What I did origianlly was take the finial to the HW store and go to the bolt trays that have "specilized" hardware and found the one that matched.

 

[btboone]

The thread is a #8-36tpi. Such a tap is available at Mscdirect.com among other places.

 

[GregD]

Hay, Thanks Bruce. I guess I'll be off to the shop now to make some inserts.

 

[btboone]

Yup. I measured the threads at .154" outside diameter, which is 3.91mm and the pitch is somewhat strange at .7mm. It is probably supposed to be metric 4 x .7mm thread, but a #8-36 happens to be essentially the same. I have a little plastic thread checking gage that has a bunch of different holes and threads in it. The pen cap screwed right in the #8-36, so if there is a slight difference in the threads, screwing in to a depth of 1/4" or so was never a problem.

 

[RPM]

When in doubt I take the part to Ace hardware near me that actually carries individual pieces of hardware. I just go through the drawers of nuts/bolts until I find what I need. No guessing or measuring.
Richard