Kitless Tubeless Ballpoint - International Association of Penturners
     International Association of Penturners
Pens for Service Members
 
Support The IAP

Go Back   International Association of Penturners > Community Forums > Show Off Your Pens!
  Forgot Password
Register FAQ Members List Search Today's Posts Mark Forums Read
Show Off Your Pens! Let's see your best work!


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 05-10-2018, 08:49 PM   #1 (permalink)
 
magpens's Avatar
 
Join Date: Feb 2011
Location: Coquitlam, BC, Canada
Photos: 63

Default Kitless Tubeless Ballpoint

I've been playing around with some ideas for kitless ballpoint pens.

Here is a final prototype. . Not polished because it is just a prototype.
Also, the nose cone and top finial are made of Delrin, just as a prototype. .
Next version will have acrylic or Alumilite nose cone and top finial, or possibly brass or Aluminum. . And I will polish that one.

The prototyping has gone through several stages. . I think I have the dimensions and threading correct now. . Notice that there are no brass tubes necessary because the single piece body is sufficiently robust.

All parts made by me, except the refill, spring, and click mechanism (from a PSI Slimline Pro kit), as well as the clip (modifed, from Slimline Pro). . I intend to make my own clip in future.

I have chosen the shape of the pen deliberately to be unusual. . I rather like this shape and will make a few more like this. . The maximum diameter (top finial) is 0.62", the center of the body is 0.55" and the top of the nose cone is 0.43". . The various tapers were fun to do on a metal-working lathe. . The overall length is 5 5/8", not counting the pushbutton.

Notice that the clip ring is hidden by cutting a recess on the underside of the top finial.


I love the way the whole pen disassembles by unscrewing the two ends.


For the final version, I might use a Schmidt click mechanism and reshape the top final to match.









__________________
Mal

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







Last edited by magpens; 05-10-2018 at 09:18 PM.
magpens is offline   Reply With Quote Top
Old 05-10-2018, 09:07 PM   #2 (permalink)
 
Join Date: Nov 2010
Location: Saskatoon SK., Canada.
Posts: 2,801
Photos: 1

Default

Good work Mal. Can the clicker button be made a little bigger? It looks a bit disproportionate. You know, a bit like the skinny kid in a football uniform with his helmet off. You’re on the right track though.
__________________
Pete
Proud to be the support staff and enabler of Marla Christensen.
Likes: (1)
Curly is offline   Reply With Quote Top
Old 05-10-2018, 09:08 PM   #3 (permalink)
 
Join Date: Oct 2017
Location: Livermore, Ca 94550
Posts: 272
Photos: 0

Default

Mal:

Schmidt button will work
Dieseldoc is offline   Reply With Quote Top
Advertisement
Old 05-10-2018, 09:08 PM   #4 (permalink)
 
magpens's Avatar
 
Join Date: Feb 2011
Location: Coquitlam, BC, Canada
Photos: 63

Default

Of course, Pete !! .... but the helmet stays off .... I hate helmets on pushbuttons ! . Like the Dayacom Long clicker is gross ... and so are some of the Cigar clickers.
__________________
Mal

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







Last edited by magpens; 05-10-2018 at 09:13 PM.
magpens is offline   Reply With Quote Top
Old 05-11-2018, 06:53 AM   #5 (permalink)
 
Dalecamino's Avatar
 
Join Date: Jan 2008
Location: Indianapolis, In.
Posts: 12,062
Photos: 219

Default

Nice way to show your skills Mal.
__________________
Chuck Hutchings
Indianapolis, In.
You can see some pens at http:www.facebook.com/chuckspens
Likes: (1)
Dalecamino is offline   Reply With Quote Top
Old 05-11-2018, 07:03 AM   #6 (permalink)
 
BSea's Avatar
 
Join Date: Dec 2009
Location: Little Rock, Arkansas
Posts: 4,554
Photos: 40

Default

That's a great pen. Kitless clickers are my favorite pens. I've never tried using the click mechanism from a slimline pro. That's a great idea. Mainly because it's easy to replace the mechanism should it fail.

But count me in the "Helmet" fan club.
__________________
Bob

Central Arkansas IAP Chapter Member
Likes: (1)
BSea is offline   Reply With Quote Top
Old 05-11-2018, 07:11 AM   #7 (permalink)
 
Dalecamino's Avatar
 
Join Date: Jan 2008
Location: Indianapolis, In.
Posts: 12,062
Photos: 219

Default

One thing! On your final product, would you consider rounding off the sharp shoulder on your finial and button? Just a personal preference.
__________________
Chuck Hutchings
Indianapolis, In.
You can see some pens at http:www.facebook.com/chuckspens
Dalecamino is offline   Reply With Quote Top
Old 05-11-2018, 07:46 AM   #8 (permalink)
 
MRDucks2's Avatar
 
Join Date: Jul 2017
Location: Franklin, IN
Posts: 875
Photos: 0

Default

I like and was going to make an observation similar to Chuck’s. There does appear to be enough meat on the finial to play the shape though, be it a chamfer, rounding, etc. Good job.


Sent from my iPhone using Penturners.org mobile app
__________________
Think deeply, Speak gently
Love much, Laugh alot
Work hard, Give freely
Be kind &
Leave The Rest to God
MRDucks2 is offline   Reply With Quote Top
Old 05-11-2018, 10:09 AM   #9 (permalink)
 
Join Date: Nov 2010
Location: Saskatoon SK., Canada.
Posts: 2,801
Photos: 1

Default

Quote:
Originally Posted by magpens View Post
Of course, Pete !! .... but the helmet stays off .... I hate helmets on pushbuttons ! . Like the Dayacom Long clicker is gross ... and so are some of the Cigar clickers.
I wasn't thinking of a helmut or knob on it just thicker down the length. When I looked at the pics originally it was on my phone. Now that I'm looking at it on my desktop I can see thicker isn't possible as long as you have the kit clip that restricts what fits through it. Down the road when you make your own clip you can optimize the design.
__________________
Pete
Proud to be the support staff and enabler of Marla Christensen.
Curly is offline   Reply With Quote Top
Old 05-11-2018, 01:18 PM   #10 (permalink)
 
magpens's Avatar
 
Join Date: Feb 2011
Location: Coquitlam, BC, Canada
Photos: 63

Default

For all you anti-flat-toppers .... I like the look as is ! . LOL :) . The sharp corner is broken so it won't cut anything !!!

Curly - Yeah I could make the pushbutton shaft a little thicker but as you pointed out, I am limited by the size of hole I can safely drill through the threaded stem of the top finial.

I could perhaps make the pushbutton shaft a two-step design with thicker at top.

Some are concerned that the click mech will eventually break. Which part breaks ? . I have made, and given away, oodles of Slimline Pros and have never had a breakage to my knowledge.
__________________
Mal

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






magpens 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 10:06 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