f0m3

Housing pins replacement
« on: March 14, 2020, 04:26:22 AM »
Hello,
i just bought a Grundig GBM 125 at ebay kleinanzeigen for 11€! Yay. It's said to be a beyerdynamic 260 OEM ribbon capsule (just one ribbon)
I had some trouble opening the microphone basket and the housing because its held together with little steel pins i had to push inside. Unfortunately i cant get the pins out, so they are lost in the plastic (maybe ABS) housing. One pin i had to bore out carefully so the hole is now a little bigger and will have to be filled (maybe epoxy).
The mic is working fine, got a new XLR cable, all insides were left as they were.
Any ideas how i could replace the pins so that it would be easy to reopen the mic? Like a glue that melts on warming  or anything similar?


f0m3

Re: Housing pins replacement
« Reply #1 on: March 14, 2020, 05:41:35 AM »
What do you think about something like this:
https://www.boesner.com/shopfunktionen/shop/fixogum?gclid=CjwKCAjwgbLzBRBsEiwAXVIygBcakPUsL2-y7p8ElQpw_ggdBJ9egu9JhwtqHJlv1eBwefDS7XXRaRoCYQ8QAvD_BwE#3829?RefID=PLA_200_15954_pla&id=15954
Nobody would through arround a ribbon microphone so the mechanical resilience doesn't have to be too big...

abbey road d enfer

Re: Housing pins replacement
« Reply #2 on: March 15, 2020, 08:33:28 AM »
Hello,
i just bought a Grundig GBM 125 at ebay kleinanzeigen for 11€! Yay. It's said to be a beyerdynamic 260 OEM ribbon capsule (just one ribbon)
I had some trouble opening the microphone basket and the housing because its held together with little steel pins i had to push inside. Unfortunately i cant get the pins out, so they are lost in the plastic (maybe ABS) housing. One pin i had to bore out carefully so the hole is now a little bigger and will have to be filled (maybe epoxy).
The mic is working fine, got a new XLR cable, all insides were left as they were.
Any ideas how i could replace the pins so that it would be easy to reopen the mic? Like a glue that melts on warming  or anything similar?
Can't you drill and tap? Very small screws and taps are available from modelling shops, even on amazon.
Who's right or wrong is irrelevant. What matters is what's right or wrong.
Star ground is for electricians.

f0m3

Re: Housing pins replacement
« Reply #3 on: March 15, 2020, 08:56:44 AM »
Good idea I'll give it a try. Dont know how good such a small tap would work in ABS.

abbey road d enfer

Re: Housing pins replacement
« Reply #4 on: March 15, 2020, 11:38:30 AM »
Good idea I'll give it a try. Dont know how good such a small tap would work in ABS.
In the same dimensions, there are self-tapping screws. They have a larger pitch and thread depth, so may be more suitable for plastic.
Who's right or wrong is irrelevant. What matters is what's right or wrong.
Star ground is for electricians.


 

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