tooling for threading - Page 3 - International Association of Penturners
     International Association of Penturners
Pens for Service Members
 
Support The IAP

Go Back   International Association of Penturners > Community Forums > Metal Lathes
  Forgot Password
Register FAQ Members List Search Today's Posts Mark Forums Read


Logged on members can hide ads!

Welcome to penturners.org!

You've found the home of The International Association of Penturners. You are currently viewing our site as a guest, which gives you limited access to view discussions, photos, and library articles.

Consider joining our community today. You'll have full access to all of our content, be able to enter our contests, find local chapters near you, and post your questions and share your experience with our members all over the world.

Membership is completely free!!

If you have any problems with the registration process or your account login, please contact us.

Reply
 
LinkBack Thread Tools Display Modes
Old 05-07-2018, 03:32 PM   #21 (permalink)
 
magpens's Avatar
 
Join Date: Feb 2011
Location: Coquitlam, BC, Canada
Photos: 63

Default

Danny,

Thanks very much for the clarification !
__________________
Mal

Kids rule the world !!! .... eventually if not already !






magpens is offline   Reply With Quote Top
Old 05-07-2018, 09:10 PM   #22 (permalink)
 
stuckinohio's Avatar
 
Join Date: May 2015
Location: Columbus Ohio
Posts: 1,492
Photos: 3

Default

Quote:
Originally Posted by More4dan View Post
Quote:
Originally Posted by magpens View Post
Dan,

You referenced your thread with the above title which I read.

I must be missing something. . How does 0.253" relate to 5 mm ?

I calc that 5 mm would be 0.197"
I meant a Bock #5 nib and feed. Not 5mm. Sorry for the confusion. It is a strange thread size to use. It seem to be a poor mashup of 1/4" thread with a Metric 0.6mm pitch. Easy enough to re-create on a metal lathe but expensive to have made. I used these homemade taps for a handful of kitless pens, and they work quite well for aluminum, brass, and acrylics. They worked ok with stainless steel. I thread on the lathe with a tap guide in the tailstock to keep everything straight.

I've since joined in on the last group buy and purchased a set of plug taps for #5 & #6 JOWO and Bock feeds as well as some triple start tap and dies.

Making my own taps taught me how to thread on the lathe and got me into making kitless pens a year sooner than had I waited for the Group Buy. After threading on the lathe for a while I switched to taps and dies with the tailstock holders and guides. They are SOOOO much easier and quicker to use. The finish of the threads are also better and the mistakes are much fewer.

There is a great satisfaction in making your own tools too especially when starting out on a budget.

Danny
Danny,

I agree about the taps and dies being so simple. for some reason threading on the lathe seems like voo-doo magic to me. Basically because I haven't tried it yet I guess. I really wouldn't even fool with it but I want to improve my skills and there seems to be several things that require special taps. Namely the Parker Vacumatic pump and making my own pistons. From what I gather you need to use the lowest thread count per inch possible to reduce the amount of turns needed to extend and retract the piston. It is difficult to find taps and dies with a low TPI, at least for me searching the net and barely knowing what I am looking for... Another thing would be nib housings for manufacturers than Jowo and Bock.

I just wanna have the ability I guess!
__________________
Lewis
stuckinohio is offline   Reply With Quote Top
Old 05-07-2018, 09:46 PM   #23 (permalink)
 
More4dan's Avatar
 
Join Date: Mar 2016
Location: Katy, TX
Posts: 989
Photos: 5

Default

Quote:
Originally Posted by stuckinohio View Post
Quote:
Originally Posted by More4dan View Post
Quote:
Originally Posted by magpens View Post
Dan,



You referenced your thread with the above title which I read.



I must be missing something. . How does 0.253" relate to 5 mm ?



I calc that 5 mm would be 0.197"


I meant a Bock #5 nib and feed. Not 5mm. Sorry for the confusion. It is a strange thread size to use. It seem to be a poor mashup of 1/4" thread with a Metric 0.6mm pitch. Easy enough to re-create on a metal lathe but expensive to have made. I used these homemade taps for a handful of kitless pens, and they work quite well for aluminum, brass, and acrylics. They worked ok with stainless steel. I thread on the lathe with a tap guide in the tailstock to keep everything straight.



I've since joined in on the last group buy and purchased a set of plug taps for #5 & #6 JOWO and Bock feeds as well as some triple start tap and dies.



Making my own taps taught me how to thread on the lathe and got me into making kitless pens a year sooner than had I waited for the Group Buy. After threading on the lathe for a while I switched to taps and dies with the tailstock holders and guides. They are SOOOO much easier and quicker to use. The finish of the threads are also better and the mistakes are much fewer.



There is a great satisfaction in making your own tools too especially when starting out on a budget.



Danny


Danny,



I agree about the taps and dies being so simple. for some reason threading on the lathe seems like voo-doo magic to me. Basically because I haven't tried it yet I guess. I really wouldn't even fool with it but I want to improve my skills and there seems to be several things that require special taps. Namely the Parker Vacumatic pump and making my own pistons. From what I gather you need to use the lowest thread count per inch possible to reduce the amount of turns needed to extend and retract the piston. It is difficult to find taps and dies with a low TPI, at least for me searching the net and barely knowing what I am looking for... Another thing would be nib housings for manufacturers than Jowo and Bock.



I just wanna have the ability I guess!


Iíd be happy to talk you through threading on the lathe. Iím not an expert but Iíve learned through the internet and some practice.

What model lathe do you have?

Danny


Sent from my iPhone using Penturners.org mobile app
More4dan is offline   Reply With Quote Top
Advertisement
Old 05-07-2018, 10:56 PM   #24 (permalink)
 
stuckinohio's Avatar
 
Join Date: May 2015
Location: Columbus Ohio
Posts: 1,492
Photos: 3

Default

I have two metal lathes:

PM1127 and a vintage Logan Powermatic. I would be learning on the PM and using it primarily but the Logan will cut much lower TPI than the PM. Off the top of my head it goes down to 4 TPI

I'll forest Gump my way through the threading using the machinist book and internet/youtube until I get stuck then I'll reach out!
__________________
Lewis
stuckinohio is offline   Reply With Quote Top
Old 05-16-2018, 07:50 AM   #25 (permalink)
 
rherrell's Avatar
 
Join Date: Aug 2006
Location: Pilot Mtn., NC
Posts: 5,803
Photos: 86

Default

https://www.amazon.com/Micro-100-290.../dp/B00Q8M30KG
__________________
Rick Herrell
Pilot Mtn.,NC

"The pain of using a cheap tool lingers long after the joy of saving money has passed"
rherrell is offline   Reply With Quote Top
Old 05-16-2018, 08:00 AM   #26 (permalink)
 
stuckinohio's Avatar
 
Join Date: May 2015
Location: Columbus Ohio
Posts: 1,492
Photos: 3

Default

Thank you Rick. I'll check it out.
__________________
Lewis
stuckinohio is offline   Reply With Quote Top
Old 05-16-2018, 10:39 AM   #27 (permalink)
 
Join Date: Nov 2010
Location: Saskatoon SK., Canada.
Posts: 2,801
Photos: 1

Default

Thanks Rick That company has a range of single point tools able to get into smaller including .100 diameter holes. Click on the blue Micro 100.

https://www.amazon.com/Micro-100/b/r...-bin=Micro+100
__________________
Pete
Proud to be the support staff and enabler of Marla Christensen.
Likes: (1)
Curly is offline   Reply With Quote Top
Related Content
Logged on members can hide ads
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


All times are GMT -5. The time now is 03:56 AM.

Powered by vBulletin® Version 3.7.6
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0

Content Copyright © 2003-2018 by Penturners.org, LLC; All Rights Reserved
Terms Of Service   Acceptable Use Policy