thank you again for the reply. i guess i will mess with it a couple
more times with acetone before i move onto another method. i am
using the 5052 for this try. i also have some 7075 which looks
almost like a mirror.
On Aug 13, 2009, at 8:10 AM, peter foti wrote:
> yes, press and peel blue. I haven't tried aluminum but I plan to in
> the future. I don't think the alloy would make much difference in
> terms of getting the pnp to stick (although it ∗might∗ make a small
> difference during etching). I generally use 6061 for machining and
> 5052 for sheet metal and bending applications. Aluminum tends to form
> an tough oxide layer very quickly (aluminum oxide is sapphire, yo).
> And I bet heating it only makes this worse, but I'm no material
> scientist so take this with a grain of salt. Also your large surface
> area can't be helping. The fact that you're getting it to stick at all
> suggests that it can be done. Its just a matter of developing a
> procedure that works.
>
>
>
>
>>
>> Thank you for the reply. Do you use pnp? I normally use the steel
>> pads with the soap in them, like a SOS off-brand. I have not tried
>> acetone yet. I tried an iron first because this is how I always do
>> PCB traces with perfect traces. That did not work. The I tried a
>> vacuum heat press 2 times without any luck. That gets in 100% flat
>> but still is not allowing a full transfer. It is blotchy and only
>> doing about 1 inch areas with no area having a large portion of
>> correct transfer.
>>
>> I see that you are using brass. Have you tried aluminum? And do you
>> think that it needs to be a certain type of aluminum? I am trying a
>> 8x16in size which is taking 2 sheets of pnp for each attempt.
>>
>
>
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