My transparencys are the coated kind for inkjets. (Laser would be better I know, but I don't have a laser that doesn't leave streaks all over the page right now...) My problem is simple, I have the coated kind of tubes and only 4 watts... I addition they are run by a inferior inverter sucking 3 amps at 12 volts. I'm off to buy new gear now :-) KreAture ----- Original Message ----- From: "Mike Harrison" To: Sent: Tuesday, April 01, 2003 1:26 PM Subject: Re: [EE]: Etchant tank I've used UV boxes with 2 x 8W and 4x15W, time is typically 5 mins. Obviously it depends on the resist and the tube distance but 15 mins is forever. What transparency are you using. Tracing paper is by faer the best I've found for use in laser printers, cheap and good toner adhesion. On Tue, 1 Apr 2003 13:17:19 +0200, you wrote: >Wow... >I use 3x 4w UV tubes and need 15 minutes for single transparancy and 30 mins >for double. >Are you perhaps using 30w tubes ? (I'm trying to make a small compact >lightbox as the one I have is clearly too low power... > > KreAture > > > >----- Original Message ----- >From: "Herbert Graf" >To: >Sent: Tuesday, April 01, 2003 5:13 AM >Subject: Re: [EE]: Etchant tank > > >> > Doing inkjet prints and UV-transfers is a good option. >> > >> > What you need: >> > - Inkjet transparancies >> > - Boards coated with positive photo-resist >> > - developer (NaOH) >> > - etchant (Na?? you have this already...) >> > - UV source. (If you live in a place with direct sunlight it will be >> > freeee!) >> >> FWIW regular fluorescent lights work very well for this sort of >thing. Only >> need about 10 minute exposure (or less) for the boards I use. TTYL >> >> -- >> http://www.piclist.com#nomail Going offline? Don't AutoReply us! >> email listserv@mitvma.mit.edu with SET PICList DIGEST in the body >> -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu