[R-390] Crayola front panels

[Bob Camp]

Hi

A couple of minor issues.

I seem to recall that some of the front panel controls are grounded 
through the front panel.  Lexan is not terribly conductive ....

The front panel is attached to a bunch of stuff with countersunk 
screws. They are nicely sized for aluminum. It's not clear to me how 
well they would match with Lexan. Cold flow and cracking issues are 
what I'm getting at.

Fine detail machining of Lexan can be a chore. The stuff tends to turn 
into nasty strings rather than chips.

Lexan is strong and it is fairly rigid. Is it as strong and rigid as 
aluminum? If we mount a radio by a lexan front panel what happens?

I would hate for this to turn into another everybody looses kind of 
deal. We have enough history in that area to finance several small 
countries ....

	Take Care!

		Bob Camp
		KB8TQ



On Apr 20, 2005, at 9:11 PM, Dan Arney wrote:

> I already have the CNC engraving program for the R-390A, we could add 
> holes AR to the program and alter it to Non A pretty easy.
> We can dupe the program over to the non A also.
>
> On the 390A CNC drill I had close to 50 people THAT SAID THEY WERE 
> GOING TO GO FOR IT and on that basis I told the Shop it looked good 
> for 50 se he did the program and we did individual panels after being 
> run through the time saver to have a good surface to work with after 
> powder coating.
> With all of the warping and shimming and time we did 31 panels of 
> which 14 were mine which I put in to spread out the cost.
> Needless to say we both lost our you know what on that deal.
>
> Plus i got accused of ripping guys off on the job. Yeah Sure!!!! Hold 
> your breath.
>
> I just called Dave at his shop and he said he would need 50 to add to 
> the program and tooling.
>
> Cost I have no idea, have a good source for LEXAN which is not cheap.
>
> If we have over 50 that are truly interested in it is there someone 
> out there willing to get the list together for me to get an estimate 
> of total cost. I am working 7 days a week and do not have the time to 
> answer that many emails. It will be cheaper is each person was willing 
> to fill in the lettering, no lettering on the rear.
>
> SO NOW WE ARE AT PUT UP OR SHUT UP. The new LEXAN would be flat so 
> that would solve the warping problem.
>
> If there is true interest I will do a WAG estimate based on 50.
> Hank
> KN6DI
>