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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
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24th Feb 2005, 2:51 pm | #1 |
Dekatron
Join Date: Nov 2003
Location: Near Leeds, West Yorkshire, UK
Posts: 4,609
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Making 'vintage' resistors
Hi folks
After various atempts at disguising modern MO & CF resistors, I think I have succeeded, using an air-drying clay called 'Makin's Clay'. Yep - I know all the issues about insulation and the like; however, the highest values are 470k, and in the application, no more that 100v will be present across any of them.
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Mike. |
24th Feb 2005, 5:10 pm | #2 |
Rest in Peace
Join Date: Jul 2004
Location: Dartford, Kent, UK.
Posts: 1,661
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Re: Making 'vintage' resistors
Hi Mike, They do look very realistic, that clay could be useful stuff, they have a website :-
http://www.makinsclay.com/UK/english/mc/aboutus.asp Whats next? Making control knobs from carrots? . Regards, Mick. |
24th Feb 2005, 5:19 pm | #3 |
Octode
Join Date: Jun 2004
Location: Hampton Vale, Peterborough, UK.
Posts: 1,698
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Re: Making 'vintage' resistors
I've not tried this, but I think that Milliput would be a better substance to use as it is a two-part resin material which is easily mouldable in the fingers or with simple tools. When hardened, it can be sanded, shaped and painted as required.
-Tony |
24th Feb 2005, 5:32 pm | #4 |
Pentode
Join Date: Oct 2003
Location: Bournemouth, Dorset, UK.
Posts: 131
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Re: Making 'vintage' resistors
Hi Mike,
Do you envisage any problems with heat dissipation? Gordon (ex-CBBTS) |
24th Feb 2005, 6:03 pm | #5 | |
Dekatron
Join Date: Nov 2003
Location: Near Leeds, West Yorkshire, UK
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Re: Making 'vintage' resistors
Quote:
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Mike. |
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24th Feb 2005, 6:08 pm | #6 |
Dekatron
Join Date: Nov 2003
Location: Near Leeds, West Yorkshire, UK
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Re: Making 'vintage' resistors
Tony
Funny; I never tried Milliput, even though I have used it many times, since the days of the much-lamented K R Whiston. I still have a 1-watter to make, so I will have a go - got some somewhere. Gordon I spent some time working out the maximum dissipations of all the resistors in the set in actual use, with an Excel spreadsheet, and ran the one whose dissipation was nearest to the rating off the bench PSU for a day - you could still touch it, so I don't think any worries there. Although the clay is air-drying, I stuck it in the oven to finally dry it before painting. Time will tell,
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Mike. |
25th Feb 2005, 9:12 am | #7 |
Heptode
Join Date: Sep 2004
Location: Preston, Lancashire, UK.
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Re: Making 'vintage' resistors
the shade on the yellow is wrong !
Only joking, what a fantastic project, its amazing just how far it is possible to go to recreate the look of originality. every credit ! |
25th Feb 2005, 9:33 am | #8 |
Dekatron
Join Date: Nov 2003
Location: Near Leeds, West Yorkshire, UK
Posts: 4,609
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Re: Making 'vintage' resistors
You didn't spot the brown, then, Steve!!
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Mike. |
1st Mar 2005, 10:54 am | #9 |
Dekatron
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Location: Cottingham, East Yorkshire, UK.
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Re: Making 'vintage' resistors
Well done Mike - what an ingenious bit of lateral thinking, and what an excellent result! Neat the way that you've wound the new resistor wires around the thicker ones for termination. I picture paints a thousand words.
It's posting such as yours, and the complete lack of "argy bargy" in this forum that makes it such a pleasure to be a part of. I'm sure that there will be many "lurkers" like me, who contribute little but derive great enjoyment from trawling through the postings. It's rare not to fnd something of interest. "Milliput" has been mentioned, and like many others I'ver used it with great success to repair bakelite cabinets. For anyone who isn't familair with it, it's a two-part epoxy putty which is mouldable and becomes rock hard at room temperatures within two hours or so. (This can be speeded up to set within minutes if heat is applied). It seems to bond well to bakelite and can be sanded, drilled, tapped and painted. The best thing is that it isn't too expensive. It comes in four colours (immaterial if it's to be painted), the cheapest being about £2.00 for a 113g pack, the dearest being white "superfine" which is getting on for a fiver for 113g pack. You just roll equal parts in the hand till it's pliable, then apply it, after which it gradually hardens. It's great for anyone who was deprived of Plasticine as a child! "Real Radio" glows in the dark! David. |
2nd Mar 2005, 2:03 am | #10 |
Triode
Join Date: Jan 2005
Location: Magherafelt, County Londonderry, UK.
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Re: Making 'vintage' resistors
It is great to see that the craftsman spirit is still alive! Those resistors are beautiful!! It reminds me of a time when radio hams built their own gear.
michael |
2nd Mar 2005, 8:52 am | #11 |
Dekatron
Join Date: Nov 2003
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Re: Making 'vintage' resistors
Thank you all for your positive comments. Next instalment - paper capacitors. Watch this space!!
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Mike. |