[R-390] White lines on knobs

[Stan Gammons]

Aluminum is a pain to paint, but I've had good like with the Mar-Hyde 
primers. Not real cheap, but it's worked well for me. ymmv.
https://www.amazon.com/Mar-Hyde-Single-Etching-Primer-Aerosol/dp/B00B3I0RSI/ref=sr_1_2?keywords=mar-hyde+self+etching+primer&qid=1566018787&s=automotive&sr=1-2

Good luck with the BFO.


73

Stan
KM4HQE


On 8/17/19 12:03 AM, Larry H wrote:
> Well, I finally got all of the knobs finished, except for one.  It's being
> a pain getting the black on it without wrinkles.  Tried a couple different
> metal primers to no avail, and they are supposed to be good for aluminum.
> Any suggestions?
>
> Here's a picture of my progress.
>
> I'm now working on the BFO stability.  It currently is drifting down about
> 150 cycles in about 1.5 hours.  This is fairly common for one of this age,
> but is not good for CW or SSB reception or some alignment procedures.  You
> can see my counter probe attached to the BFO output at the front left.  I'm
> going to try to get it down to less that 30 in .5 hour.
>
> Happy fixing.  Regards, Larry
>
> On Wed, Jul 31, 2019 at 1:46 AM Larry H <larry41gm at gmail.com> wrote:
>
>> Thank you all again for providing info to me about white lining the
>> knobs.  It sure made it easier for me this time.  I did the 6 that have 4
>> coats of black on them and were cured long enough.  That sure made a huge
>> difference.  I used an artist enamel that I already had on hand, Folk Art
>> 4001 wicker white gloss acrylic.  It is water based, so has easy cleanup
>> until dry.  I used it again because of the color match and it's durable
>> when dry.  I applied it with a syringe I confiscated from a printer
>> cartridge ink refilling kit.  A picture of the front panel of the Stewart
>> Warner in progress is attached.  This time, I didn't even have the urge to
>> throw a knob across the garage, like last time.  Thanks again.
>>
>> Regards, Larry
>>
>>
>> ______________________________________________________________
>> R-390 mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/r-390
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:R-390 at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html