Oops asa threading

[GingerBreadPaint]

I have trouble gripping/turning the knob on my Oops asa and want to 3d print a new one. I have had no luck finding any online, but I know I can model one.

My problem is I don't have access to any kind of thread gauges at home. Does anyone know the thread for the asa knob?

[Euphie]

Palmers has stuff like this https://palmerspursuit.com/products/...-female-asa-to and I assume from the names on them that an asa is .825” @14 tpi but, there are still other critical dimensions like the distance between the o-rings and such but I suppose if you measure enough you can get all that info

Edit: I misunderstood, I thought you wanted ASA thread size specifically, you need the knob's thread. You can always just take the part into home depot they usually have a little display with a built in threadguage. I wouldn't be surprised if it was normal ASA threads on the knob too.

[Alexndl]

Do you have access to a precision measurement tool like a caliper?
if you can leasure the thread outer diameter (called major diameter) and the distance between the 4 peak of the thread you might be able to confirm which one it is.

I no longer have a oops ASA so cant check for you

[GingerBreadPaint]

For the future internet searches.

Oops asa:
Thread OD = .709 in
Thread ID = .631 in
Aprox TPI = 12
Thread length = about .398 in

Oops knob:
Thread OD = ? can't measure
Thread ID = .634 in
Thread length = about .643 in