Pen holders

Burke LaShell
Posts: 90
Joined: Tue Apr 10, 2012 12:42 pm
Location: Philadelphia, PA

Pen holders

Post by Burke LaShell » Sat Jun 16, 2012 7:52 pm

I went through a bunch of iterations before I came up with something that works for me.

#1 - Super simple
ImageImage
Pros:
*Quick to build
Cons:
*No give on the z-axis (smashes pen tips)

#2 - Single hole, gravity and gaskets
ImageImage
Pros:
*None
Cons:
*Pen didn't slide up and down as I expected it to.
*Tapered body of the pen made it difficult to make the right size holes.

#3 - Easy to change pens
ImageImage
Pros:
*Super easy to change pens.
Cons:
*I thought I needed different radii for different pens. Turns out that you don't.
*I thought there would be some give on the z-axis, but the pen ridges catch edges and it still smashes pen tips.

#4 - Pen carriage
ImageImage
Pros:
*It works pretty well.
*Gravity is enough to keep pen in contact with paper.
Cons:
*Should be slimmer.
*Difficult to align when gluing.

#5 - Final design
Image
Pros:
*I'm finally happy with this design.
*Nice and slim.
*Gravity is sufficient to keep pen in contact with the paper.
*Carriage easily slides upward to prevent smashed pen tips.
*Easy to change pens.
*Tabs make it easy to assemble and align when gluing.

Burke LaShell
Posts: 90
Joined: Tue Apr 10, 2012 12:42 pm
Location: Philadelphia, PA

Re: Pen holders

Post by Burke LaShell » Sat Jun 16, 2012 8:14 pm

Last edited by Burke LaShell on Wed Jun 20, 2012 2:24 am, edited 1 time in total.

Burke LaShell
Posts: 90
Joined: Tue Apr 10, 2012 12:42 pm
Location: Philadelphia, PA

Re: Pen holders

Post by Burke LaShell » Sat Jun 16, 2012 8:21 pm

Image

Improbable Construct
Posts: 997
Joined: Tue Apr 10, 2012 3:21 am
Location: Fairhope, AL
Contact:

Re: Pen holders

Post by Improbable Construct » Sat Jun 16, 2012 8:21 pm

Very Nice! You must need to do a lot of drawing! It makes my "zip tie a sharpie to the Z axis makerslide" look pretty cheesy. :)
Shapeoko #Classified some of the bolts may be original parts.
Shapeoko 1 # ???? Stainless plates, still in the box.
Shapeoko 2 # 3926 not stock
Shapeoko 3 # 0003
Store:
http://ImprobableConstruct.com
Twitter:
https://twitter.com/ImprblConstruct

Burke LaShell
Posts: 90
Joined: Tue Apr 10, 2012 12:42 pm
Location: Philadelphia, PA

Re: Pen holders

Post by Burke LaShell » Sat Jun 16, 2012 8:54 pm

You must need to do a lot of drawing!
It was more of an exercise in designing a 3d object and making it with my ShapeOko.

I think I will use it for drawing, though. Here's my first.
Image

Improbable Construct
Posts: 997
Joined: Tue Apr 10, 2012 3:21 am
Location: Fairhope, AL
Contact:

Re: Pen holders

Post by Improbable Construct » Sun Jun 17, 2012 1:31 am

*CHEER* FSM *CHEER*
Shapeoko #Classified some of the bolts may be original parts.
Shapeoko 1 # ???? Stainless plates, still in the box.
Shapeoko 2 # 3926 not stock
Shapeoko 3 # 0003
Store:
http://ImprobableConstruct.com
Twitter:
https://twitter.com/ImprblConstruct

JCPhlux
Posts: 124
Joined: Tue Apr 10, 2012 2:31 pm
Location: Dallas, Texas
Contact:

RE: Pen holders

Post by JCPhlux » Sun Jun 17, 2012 2:52 am

Looks good.
Sent from my Lumia 900 using Board Express
--
John R Cutburth II
Twitter @JohnCutburth

vios
Posts: 46
Joined: Sun Apr 22, 2012 12:00 pm

Re: Pen holders

Post by vios » Sun Jun 17, 2012 3:41 am

This can be an accessories to ShapeOko.
Sell it in Inventables ;)

How about a video of drawing with ShapeOko.

Burke LaShell
Posts: 90
Joined: Tue Apr 10, 2012 12:42 pm
Location: Philadelphia, PA

Re: Pen holders

Post by Burke LaShell » Wed Jun 20, 2012 2:17 am

How about a video of drawing with ShapeOko.
Here you go...



Burke LaShell
Posts: 90
Joined: Tue Apr 10, 2012 12:42 pm
Location: Philadelphia, PA

Re: Pen holders

Post by Burke LaShell » Wed Jun 20, 2012 11:19 am

My only suggestion would be to put springs on the rods between the carriage and the top.
I experimented with springs and found they are unnecessary. 1) I had difficulty finding "just right" springs the right length and the right strength. 2) Gravity is sufficient to keep in firm contact with the paper.

I can't wait for more details on how you're doing it. I found this video for turning JPGs into g-code...

...but the single line is much cooler.

After watching your video, I clearly need to start driving my ShapeOko faster. :oops:

Great work!

Post Reply