PSI Sketch Pen/Pencil Combo Kit ... and a Potato???

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Forum topic by SouthpawCA posted 09-03-2018 04:36 PM 641 views 0 times favorited 8 replies Add to Favorites Watch
View SouthpawCA's profile


273 posts in 3835 days

09-03-2018 04:36 PM

Topic tags/keywords: question

I was requested to make a number of sketch pencils for an art group. I’ve made these before but from a different company, Craft Supply. However, I thought I’d try PennState this time.

I noticed a few things were different between the 2 companies. First PennState had a pen pencil combination kit … that’s cool I thought. The bushings were slightly different … OK I needed new bushings anyhow. I ordered a bunch and decided to read the instructions. The PennState kit brass tube was already roughed up for the glue … again cool. And the tube was threaded at one end … interesting. Reading the instructions again closer, the pen/pencil mechanism screwed right into the brass tube … I’m still good with that.

Here is where the rub comes in. The instructions say to “Plug the brass tube, threaded end, with a fresh potato to avoid the glue from (getting on) the threads.” Then insert the tube into the blank like normal. “After the glue dries pull out the potato”.

There has to be a better way to protect the threads from the glue … I was thinking a small cork or even turning a small tapered dowel to fit while the glue dries. Does anyone else have some ideas or did you really use the potato?

-- Don

8 replies so far

View TravisH's profile


700 posts in 2537 days

#1 posted 09-03-2018 05:41 PM

I have always used plumbers puddy. I roll it out into sheet after needing and then plug away. On some I will use a dowel to smash the puddy from inside and make sure have good seal with the brass tube wall.

View JADobson's profile


1448 posts in 2713 days

#2 posted 09-03-2018 06:10 PM

I use play dough but the potato works well.

-- No craft is very far from the line beyond which is magic. -- Lord Dunsany — Instagram @grailwoodworks

View Wildwood's profile


2790 posts in 2737 days

#3 posted 09-03-2018 07:15 PM

2nd using play dough, but potato will work too!

-- Bill

View GrantA's profile


2107 posts in 2010 days

#4 posted 09-03-2018 07:21 PM

This is funny, got something against potatoes? You can eat it afterwards! What else can you use and then eat?
I like it!

View Joe Lyddon's profile

Joe Lyddon

10859 posts in 4654 days

#5 posted 09-03-2018 07:46 PM

Never heard of such a thing… Cut up a perfectly good potato just to protect Threads from glue??

Play dough sounds good to me… haven’t had any around since we had kids running around… :)

They could just Include a little dab of the stuff with the kit… and it would solve all kinds of grief! LOL

What kind of stencils do you make? Care to show us some? :) :)

-- Have Fun! Joe Lyddon - Alta Loma, CA USA - Home: ... My Small Gallery:

View gwilki's profile


330 posts in 2076 days

#6 posted 09-04-2018 01:41 AM

I use baseplate wax

-- Grant Wilkinson, Ottawa ON

View SouthpawCA's profile


273 posts in 3835 days

#7 posted 09-04-2018 02:54 PM

I found a YouTube video from PennState showing how they used the potato (an apple in the video). But this Baseplate wax looks interesting. Thanks for suggesting it gwilki! The wax, I think, would be reusable to a point. I hope I can find it in the states.

-- Don

View JADobson's profile


1448 posts in 2713 days

#8 posted 09-04-2018 04:09 PM

The one thing that I really like about the potato is that it seals tightly when you punch it with the blank but as it dries it shrinks making it really easy to remove. Some of the other stuff can get some glue on it and stick to the edges a bit, but not a potato.

-- No craft is very far from the line beyond which is magic. -- Lord Dunsany — Instagram @grailwoodworks

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