Curved Surfaces on Fountain Pen
- Thread starter comiris
- Start date
Signed-In Members Don't See This Ad
Signed-In Members Don't See This Ad
off center turning
Although you can mount a lathe on a mill, the motor usually is built for turning speeds not for stepper functionality. I believe that there is one brand Tormach
Duality Lathe is the only one I have found that tries it
Duality Lathe is the only one I have found that tries it
The Penguin
Member
research "therming"
BradG
Member
That really looks uncomfortable to hold
Robert111
Member
+1 Yeah, seems more a design exercise than usable pen.
Chuck Key
Member
The first finger, middle finger and thumb seem to form a triangle when holding a pen.
http://www.penturners.org/forum/f14/cross-section-pen-photo-no-2-added-14917/index3.html
LagniappeRob
Member
I was wondering the same thing when seeing the off-center chuck in the PSI catalog.
Then I found their youtube video of using it.
The Off Center Chuck System at Penn State Industries - YouTube
Check out starting at 2:15 for multi-sided.
BTW, they're being added to Amazon at a much lower price. Not in stock yet, but available to pre-order. Probably shouldn't do this since Amazon will change their prices on a whim, but here ya go: PSI Woodworking CSC600 Off Center Wood Lathe Chuck System - Amazon.com
Then I found their youtube video of using it.
The Off Center Chuck System at Penn State Industries - YouTube
Check out starting at 2:15 for multi-sided.
BTW, they're being added to Amazon at a much lower price. Not in stock yet, but available to pre-order. Probably shouldn't do this since Amazon will change their prices on a whim, but here ya go: PSI Woodworking CSC600 Off Center Wood Lathe Chuck System - Amazon.com
LagniappeRob
Member
Looking at the pen, I think it would be of more interest to Mazda RX-7 and RX-8 owners. It looks a lot like the rotors in our engines.
BradG
Member
Well i guess that depends on how you hold a pen. for me, that really wouldn't work
Joe S.
Member
My idea: get a large plywood disk mounted on the lathe, easily done with a faceplate. Drill a hole near the edge taking care to have it a square as possible. Make a closed end mandril out of a bolt or somthing and screw the pen part in. To add balance use some kind counter weight.
I've never done anything like this, but it might work with a little refinement.
I've never done anything like this, but it might work with a little refinement.
This is the same conclusion I came to but slimmer version. Under 10cm.
I made some clay mock ups and it really does feel comfortable.
Few Papermates and especially Lami Safari FT (since 1980) incorporate this type of design.
NewLondon88
Local Chapter Leader
There's lots of pens using this design, and they are rather comfortable.
I usually snag one at the bank when i see them.. then I change the
refill. :tongue:
My hand is acting like the 4 axis, rotating for the 3 axis cnc.
Haynie
Member
Outside not so hard. Inside of cap no idea
BradG
Member
good point.... any ideas anyone?
duncsuss
Member
Dulos
Member
I know this is a lousy picture. I took it with my IPad. hopefully u can see I made a triangular pen on my lathe as a prototype a while back. The only way i could make it work was to make it a closed end pen. It is now the pen I carry. It is quite comfortable to use. It is a long of process to make it work, but I think it could be a cool pen to make. If you want more info on how I did it, just let me know.
I do think the lost wood technique could work for the cap.
I do think the lost wood technique could work for the cap.
Attachments
bigevilgrape
Member
I'm not sure without holding it, but I get triangle shaped wood pencils when I had to do a lot of proofs for math exams. I found the triangles to be much more comfortable then the standard wooden pencils. I use the "standard" taught in school grip.