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Hints, Tips and Solutions (Do NOT post requests for help here) If you have any useful general hints and tips for vintage technology repair and restoration, please share them here. PLEASE DO NOT POST REQUESTS FOR HELP HERE! |
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14th Sep 2022, 5:13 pm | #1 |
Octode
Join Date: Nov 2003
Location: Bath, Somerset, UK.
Posts: 1,805
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Roberts button cap solution
We've all been there, picked up a seventies Roberts radio with one or more of the aluminium button caps missing. This is quite common due to ageing of the glue holding the cap in place coupled with the speed of the button popping up when changing bands or switching off.
I needed a small aluminium cylinder that had a closed end that could be machined so as to leave me with just the closed end with a shallow skirt. Looking through my spares, I found an old electrolytic capacitor with just the right diameter (with the shrink-on sleeve removed) to be able to fit over the stepped edge of the plastic button. Carefully removing the last 1.5mm of the capacitor in the lathe (chuck rotated by hand), the new cap was glued to the plastic button then spun up to give the "engine turning" of the cap top. A bit of final burnishing with a small stick finished the job. I am sure that others could improve on this with a little extra care, but you get the idea. Neil
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preserving the recent past, for the distant future. |
14th Sep 2022, 8:21 pm | #2 |
Heptode
Join Date: Jan 2018
Location: Folkestone, Kent, UK.
Posts: 711
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Re: Roberts button cap solution
what a great idea
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15th Sep 2022, 9:27 am | #3 |
Dekatron
Join Date: Nov 2003
Location: Near Leeds, West Yorkshire, UK
Posts: 4,609
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Re: Roberts button cap solution
You can't tell the difference, Neil - great job
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Mike. |
16th Sep 2022, 11:22 pm | #4 |
Pentode
Join Date: Mar 2022
Location: Retford, Nottinghamshire, UK.
Posts: 193
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Re: Roberts button cap solution
Very novel solution. I like it!
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Paul |
18th Sep 2022, 7:18 pm | #5 |
Octode
Join Date: Sep 2020
Location: Thetford, Norfolk, UK.
Posts: 1,741
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Re: Roberts button cap solution
11 out of 10!
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