Wise Posted March 19, 2005 Report Share Posted March 19, 2005 Have anyone any kind of experience with PCB UV lightning from a solarium ?I got a bed with 15 light tubes in the top half and 10 in the lower half. The tube have the model: Goldsun RS Longlife Fasttan G2-10 100W.So a total of 1500W in the top and 1000 in the lower. So my questions: 1. Have this kind of UV light the right wavelength for the photoresist on a PCB ?2. How long do you think I have to "tan" my PCB for a god result ? (my guess approx. just a few sec's....)Happy taning/Wise Quote Link to comment Share on other sites More sharing options...
stryd_one Posted March 19, 2005 Report Share Posted March 19, 2005 ;D ;D ;DSorry but that made me really laugh. I have this mental image of a core module wearing those big dark sunglasses and a string bikini heheheheheheh Quote Link to comment Share on other sites More sharing options...
Wise Posted March 20, 2005 Author Report Share Posted March 20, 2005 ;D ;DHehe, I think everyone here can imagine 8)/Wise Quote Link to comment Share on other sites More sharing options...
Steven_C Posted March 22, 2005 Report Share Posted March 22, 2005 I have no idea! I just use "press'n'peel" film. You just photocopy the pattern onto the film, then iron the pattern onto the board. Then etch. Quick and easy. But then the time consuming part is drilling all the holes! Better to buy from Mike or Smash. 8) Quote Link to comment Share on other sites More sharing options...
Screaming_Rabbit Posted March 22, 2005 Report Share Posted March 22, 2005 I have no idea! I just use "press'n'peel" film. You just photocopy the pattern onto the film, then iron the pattern onto the board. Then etch. Quick and easy. But then the time consuming part is drilling all the holes! Better to buy from Mike or Smash. 8)Hey StevenCan you post the link, from where you're ordering this film? I have my boards from SmashTV and I'm totally satisfied but I'd like to etch the boards on which the buttons and LEDs are sitting on.Greets, RogerPS: I know there are some threads in the forum about this ... but anyway ;) Quote Link to comment Share on other sites More sharing options...
smashtv Posted March 22, 2005 Report Share Posted March 22, 2005 http://www.techniks.com/index.htmGood stuff..... Quote Link to comment Share on other sites More sharing options...
Davo Posted March 23, 2005 Report Share Posted March 23, 2005 For those who didn't know already, you can use toner transfer paper (the wet kind) to make decals. Quote Link to comment Share on other sites More sharing options...
Steven_C Posted March 23, 2005 Report Share Posted March 23, 2005 I've been meaning to try that paper/toner transfer method, but haven't had the time. BTW another source for Press'n'Peel is Jaycar in Australia and NZ as well as altronics in Australia. (Not Allelectronics in USA) Quote Link to comment Share on other sites More sharing options...
stryd_one Posted March 23, 2005 Report Share Posted March 23, 2005 Thanks for the local knowledge StevenC :)You're not in Melbourne by any chance? Quote Link to comment Share on other sites More sharing options...
Wise Posted March 23, 2005 Author Report Share Posted March 23, 2005 Thx for the tip about "PaP", will try that when I got the time.Anyway, back to the topic...I think this will work, a quick google and I found:http://www.arubaaloe.com/uva-b.htm Info about UV/A UV/Bhttp://www.wolffsystem.de/download/Gold_Sun_RS_100W.pdf The light tubes in the solarium I gotThe common UV tubes that you can bye for PCB porposes have a wavelength of 365nm, wich is the same as the tubes in the solarium 8) 8)Someone with a bit of experience have a thought about a good exposure time ? I'll maybe find some time today to test this :)I'll let you know for sure/wise Quote Link to comment Share on other sites More sharing options...
Tanstaafl Posted March 23, 2005 Report Share Posted March 23, 2005 my 15 watt uv works at 5 inches from board for 8 minutes.I guess you could work out exposure time based on wattage and distance from board.light falls off at the inverse of the square of the distance... i think i said that right....so if my 15 watt bulb burns in 8 minutes from 5 inches... it would be 16 minutes at 10 inches 32 minutes at 20 inches... etc.also, i believe generally that the wattage of a bulb is porportional to it's length.... approx. 4 foot bulb = 40 watts or sothis being about 2.5 times the wattage of my bulb... if your lamp is 5 inches away the time to burn would be approx. 3.2 minutes.I know the photo boards are expensive, but i wasted a few when i started because there was not a good histogram with the light kit or the photo etch boards.good luck Quote Link to comment Share on other sites More sharing options...
Wise Posted March 27, 2005 Author Report Share Posted March 27, 2005 Wow !Last night i tested this UV-source, and :First try - Success at once !Amazing, I exposed the PCB for 2min @ 2 cm from 100 W UV-lighttube 8) 8) The develop and the etching went just as perfect you want !So now I can expose PCB's up to 60*200cm doubble side ;D ;D ;D (the developing and etching is another question..hehe)Some pictures for your pleasureNotice the size of the UB-tubes compare to the DIN, note that all MIDI equipment nearby was wearing UV-protection glasses and was not harmed during this experiment ! 8)After etching:/Wise Quote Link to comment Share on other sites More sharing options...
stryd_one Posted March 27, 2005 Report Share Posted March 27, 2005 That's a good lookin board man. Quote Link to comment Share on other sites More sharing options...
Wise Posted March 27, 2005 Author Report Share Posted March 27, 2005 Thx ! :)I can defenitively say that this is the way i'm going to make my boards in the future/Wise Quote Link to comment Share on other sites More sharing options...
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