LED to E10 - Adapter

by Modellaner Sep 29, 2018
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That's really cool! How did you get the thread specs for the bulb base? Was it just trial and error, or did you find it somewhere? I have the plug for E17 bulbs and I searched quite extensively and couldn't find any details on the thread pitch, so I had to print test pieces, see how it fit, adjust the pitch, etc. I measured as well as I could and I think I got close but never found the official specs for the Edison thread.

Yeah I was seraching for it too and fount the specs for all edison threads under following link: https://www.gewinde-normen.de/en/e-thread.html
Its a german site and only some text shows up in english but I am sure you can understand the main important sections.
But I also had to print prototypes too because my 3d printer is mostly generating part a little bigger.
So I had to solve it by change the diameter a little.

Yes, I found the same page! Only problem is it has E16 and E18 - no E17! With a pitch of 2.5 for the E16 and 3.0 for the E18 - my measurements looked like the 2.75mm average between the two for the E17 would work, so that's what I went with.

Oh now I see it too E17 is missing. Hm thats weired. I got the most messurments of a old light bulb and validate it with the data from the page.
But yes I only got the pich only from that page ... .