No, the shaft is maybe 3 or 4mm. 10mm is the outside dimension of the arbor/insert which forms the mechanical connection with the typewriter and which I'll still be using, once fixed to the knob detailed above.
Great work. If I remember correctly 10mm is the outside diameter of the knurling on the insert. The I.D. of the knob is closer to 9mm for a press fit. I thought of making the right hand knob to the diameter of the shaft and eliminating the insert. The left hand must use the insert if the variable function is to work. I do not recall the insert dimension exactly nor do I recall the diameter of the shaft at the moment.
Bill, I know. It is is a pretty close thing but by hook or by crook, I will find a way of securing it to the arbor - which I'd like to keep because it is so nicely made.
Looks promising. Another option might be 3D-printing.
ReplyDeleteBut 3D printing is still Sci-Fi, right?
DeleteI've been using 3D printed parts on my typers....
DeleteWas the measurement for the center hole taken from the shaft, or the hole on the original platen knob?
ReplyDeleteNo, the shaft is maybe 3 or 4mm. 10mm is the outside dimension of the arbor/insert which forms the mechanical connection with the typewriter and which I'll still be using, once fixed to the knob detailed above.
DeleteAh. I thought that might be the case. 10mm? Hmmmm.
DeleteGreat work.
ReplyDeleteIf I remember correctly 10mm is the outside diameter of the knurling on the insert. The I.D. of the knob is closer to 9mm for a press fit. I thought of making the right hand knob to the diameter of the shaft and eliminating the insert. The left hand must use the insert if the variable function is to work. I do not recall the insert dimension exactly nor do I recall the diameter of the shaft at the moment.
Good luck with your knob.
Bill, I know. It is is a pretty close thing but by hook or by crook, I will find a way of securing it to the arbor - which I'd like to keep because it is so nicely made.
Delete