Thread Chased Boxes?

[Dan Bevilacqua]

Recently obtained thread chasers. Been practicing quite a bit, and made a box with threads that actually worked. The female threads were in the base while the male threads were in the lid. Most videos I have seen show the internal thread on the lid and external on the base (opposite of what I did).

Queston is whether there is any advantage or disadvantage in doing it one way or the other.

 

[Darryl Fective]

I don't know, but I think it's just a preference or design consideration. If you might pour something out of it, male thread on the box is better so you don't get stuff trapped in the threads. Having male thread on the lid can offer a lower/smaller profile lid design, but can be tough to grip if you don't have a decent vertical surface area.

I didn't think I'd pick up the skills for chaser tools, so I made a jig. It's not slam-dunk easy, but probably better and more consistent results than if I were chasing.

 

[Dean Center]

I can't speak specifically of threads, but in a conventional snug fit box, here are my thoughts. If you put the tenon (male part) on the bottom, it gives the bottom section more volume. This is good if you're actually going to use the box to store something, and essential if it's a short base. If you have a very short top, putting the tenon on the top may be the only solution, as there may not be enough height for an internal recess. As Darryl says, a whole lot of it is personal preference.

 

[Bill Alston]

I don't know, but I think it's just a preference or design consideration. If you might pour something out of it, male thread on the box is better so you don't get stuff trapped in the threads. Having male thread on the lid can offer a lower/smaller profile lid design, but can be tough to grip if you don't have a decent vertical surface area.

I didn't think I'd pick up the skills for chaser tools, so I made a jig. It's not slam-dunk easy, but probably better and more consistent results than if I were chasing.

Could you post a picture of your jig please?

 

[RichColvin]

putting the threads on the inside of the lid allows the base to be filled to the top.