If there’s any small gap left when it’s screwed together it could be a nitroglycerin tablet holder
That's the first thing I thought of when I saw this.
I don't know what it is for sure but I bet it'd work great as a pill crusher.
My wild guess would be two end stops for pipes. One external and internally treaded for the same diameter.
That's what they are! I have a box full of leftover parts from years of home repairs, and I frequently store caps of opposite genders screwed together like this.
maybe perhaps it's a pair of caps for sensitive equipment, like some coaxial cable termination. these things can get expensive
Could be a rosin pre-press mold.
This is almost what it is. They come in lots of shapes and sizes. This one is probably for hash coins. Seems too small for a puck for a rosin forge, and hash is commonly sold in pressed coins.
Yes, I think your right. I used a pre-press of similar diameter for a very small setup but now that I think about it, it had a chamber in the top piece like this: https://files.catbox.moe/c4tw63.jpg
Good call.
This thing is threaded though, which would be counter productive to the pressing.
I don't think the threads would impact the pressing with this design; they are outside the inner chamber.
What is this thing?
Let us help you identify that mysterious object you’ve found.
Currently in CHALLENGE mode: If you've got something obscure knocking about, post a picture, and let's see how we do. Please prefix such posts with "CHALLENGE:" so we know we've got a fighting chance.