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Vintage Amateur and Military Radio Amateur/military receivers and transmitters, morse, and any other related vintage comms equipment.

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Old 5th Feb 2019, 2:21 pm   #21
deliverance
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Default Re: To paint or not to paint ?

Powder coat the frame and lacquer the mesh me thinks .
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Old 5th Feb 2019, 3:49 pm   #22
Scimitar
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Default Re: To paint or not to paint ?

Etch primers are out of date now. The modern equivalent is epoxy primer which outperforms etch and doesn't have compatibility problems. The painted surface can also be left in primer permanently if required and it can be tinted to any colour preferred.
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Old 11th Feb 2019, 7:02 pm   #23
avocollector
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Default Re: To paint or not to paint ?

Great as it stands IMHO
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Old 13th Feb 2019, 11:51 am   #24
Malcolm T
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Default Re: To paint or not to paint ?

I would not powder coat, if it chips how do you retouch it ?.
If you anodize and scratch it, its done for !

Damaged paint job ! no problem just touch up or if you go for a change in colour later just paint strip and re-spray !.

Spray is my option . If its good enough for aircraft and Mil stuff externally then that,s my choice Just make sure the ali surface is not damaged , NO scratches etc PREPARATION is the key ( no pun ).

IF it were me
I would wet block sand the surface with 500 - 600 grit with plenty of warm water suds you.ll be surprised at how much debri comes off, let dry and and de-grease with paint thinner then prime then top coats.

OR take it to a pro spray shop and let them do it 100%.
You really want the surface Etch Primed with Zinc Chromate yellow, hence the pro spray shop ! Zinc Chromate etches into the metal and provides a key for the paint. Make sure any earth points to the cover are left bare or use stainless steel tooth washers and fastners if its all painted, for earth bonding. You can buy blackodized stainless steel fastners in the UK.
Find yourself a company like this in your area and talk to them, well worth it because they have all the gear for it . Good luck
http://www.goldburnfinishers.co.uk/pretreatment.php
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Old 13th Feb 2019, 9:07 pm   #25
ribbonmicsrus
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Default Re: To paint or not to paint ?

Quote:
Originally Posted by g4wim_tim View Post
I'm open to being convinced either way - currently I'm leaning toward leaving the case 'naked'.
What a lovely job you have done Tim. I think it looks great as it is, back in the day I used to leave all my homebrew naked. Look forward to hearing that rig.
73
Andy G3UEQ
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Old 14th Feb 2019, 12:43 pm   #26
g4wim_tim
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Default Re: To paint or not to paint ?

Hi Guys,

thanks for all the comments / suggestions.

Hope I've made the right choice, but have opted to powder coat the frame and lacquer the inserts.

If all goes to plan should have the case back in the next day or two ready to assemble.

I'll post some more pictures later.

As a tx, I'm getting good reports on it but ironically have yet to have a 160M contact - the band I originally built it for as a Codar AT5 on steroids !

Regards Tim
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Building and tinkering for over 50 years, from 807's to digital amateur TV.
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Old 14th Feb 2019, 1:47 pm   #27
ribbonmicsrus
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Default Re: To paint or not to paint ?

Sounds good Tim, shame we are too far apart for my meager 160m aerial, I have an AT5, KW160, TW Topbander, and one of G3WCE Bruce's impeccably built rigs to call on, oh and a Vanguard!

Perhaps one day when conditions are good.


73
Andy
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