On Fri, Mar 12, 2021 at 11:56 PM Jim Pruitt <jpruitt67@...> wrote:
Is kpr a negative resist?? Or positive resist?
On Fri, Mar 12, 2021, 8:49 PM Sam Reaves <sam.reaves@...> wrote:
A friend of mine uses cosmetic cotton pads(get them at your local dollar store)? to apply Kodak Photoresist (KPR). When it is dry he places the unexposed boards in an old phone book for storage and pulls one out (all under a yellow safe light) when he needs one. He has used this method for decades.