开云体育

Re: "Jupiter 1" Cutting wheel in a pencil sharpener


 

开云体育

Hi Paul and other for feedback.
My Jupiter 1 pencil sharpener has only a cut edge on one side. I think another model has on both sides.
As I have measured it, I think all screws are in inches, the cutting axle is in Left Hand 1/2-20.

A technical question: is -20 tpi a UNF or UNC? ?

I asked you about this inch system . As I understand, there have always been 12 inches in one foot.
However, the length of a foot has varied during time and country. Hamburg, as city, had their own length of a foot long time ago.
Pls correct me.

Pencil wood: I tested my sharpener with both BIC and STAEDTLER, both HB, however, the cutoff stuff was big differently.
One looks like wood. The other was some generic or composite wood.
But the pencils became sharp.

I saw in EBay? an original sparepart cutting disk: EUR 150

I have taken a lot of pictures: maybe I will make a short view in YouTube ?

Johannes Lavoll
Mexico





From: [email protected] <[email protected]> on behalf of paul mcclintic via groups.io <cannontandem@...>
Sent: Thursday, August 15, 2024 5:11 AM
To: [email protected] <[email protected]>
Subject: Re: [7x12MiniLathe] "Jupiter 1" Cutting wheel in a pencil sharpener
?
The cutter was designed so you can flip it over when one side is dull. Are you going to do something different on the other side? Did you ever find out what kind of threads the missing screws where? I liked your idea of using a slightly oversized dowel threaded into the hole to find the pitch of the thread. Paul M

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