SounDuke

I think I etched a good board. However, I'm not sure if the copper was well- corroded. I don't see copper between tracks and outside the circuit, but my tester shows infiniteKohm when i touch with + and - the tracks, 0Kohm when I touch the plastic panel. I can't understand these values.. Is the board ok?

Thank you Synapsis ;) Ordinary lamps will not work, but Solar lamp will work. Electronics sellers say "you must buy a fluorescent tube " which costs a lot. I succesfully impressed a board with solar lamp, the blue ones, 60w power which costs 1€. well my etched board looks ok, the only problem is that there is a VERY slight asimmetry in a corner due to unproper simmetry of the masters. it's very slight, i speak of a track wich is at least 0,01 mm larger than the printed one. do you think it is a big problem?

Thank you Synapsis ;) Ordinary lamps will not work, but Solar lamp will work. Electronics sellers say "you must buy a fluorescent tube " which costs a lot. I succesfully impressed a board with solar lamp, the blue ones, 60w power which costs 1€. well my etched board looks ok, the only problem is that there is a VERY slight asimmetry in a corner due to unproper simmetry of the masters. it's very slight, i speak of a track wich is at least 0,01 mm larger than the printed one. do you think it is a big problem?

Yes I printed the master on transparency pardon... Well I don't think I have to peel the paper because I made it and the result was that I had a copper board without photoresist in one hand and a piece of paper white above and black below.. maybe with a 60W solar lamp I have to expose for more time than 35 minutes

Yes I printed the master on transparency pardon... Well I don't think I have to peel the paper because I made it and the result was that I had a copper board without photoresist in one hand and a piece of paper white above and black below.. maybe with a 60W solar lamp I have to expose for more time than 35 minutes

I have a problem: I purchased a Pre-sensibilized board. I made 3 copies of the master on glossy paper, put it above the board (which has a white paper on the copper side) and put a piece of glass on it. Then I turned on a 60W lamp about 15 centimetres far from the whole thing for 35 minutes. What happened? Nothing! the paper was not impressed by light! What is the error? I don't think there is a protective sheet above the board, because as I try to take out the white paper I see the copper clad below. Help please :'(

I have a problem: I purchased a Pre-sensibilized board. I made 3 copies of the master on glossy paper, put it above the board (which has a white paper on the copper side) and put a piece of glass on it. Then I turned on a 60W lamp about 15 centimetres far from the whole thing for 35 minutes. What happened? Nothing! the paper was not impressed by light! What is the error? I don't think there is a protective sheet above the board, because as I try to take out the white paper I see the copper clad below. Help please :'(

hey things are growing fast! another year and MIDIBOX opensource project will be attacked by synthesizer corporations, parallel to what happened between Linux and Microsoft ;D ROLAND VS Thorsten Klose and his gang of mad electricians!

A-B-S-O-L-U-T-E-L-Y a bench drill! I can't think out how to do precise holes with an handdrill. In addiction, with an hand drill you risk to break the tip of the drill, which is required to be very diametre-small :D

A-B-S-O-L-U-T-E-L-Y a bench drill! I can't think out how to do precise holes with an handdrill. In addiction, with an hand drill you risk to break the tip of the drill, which is required to be very diametre-small :D

thanks Uclaros you made a good work outta here with these PDF ;) nice rabbit

thanks Uclaros you made a good work outta here with these PDF ;) nice rabbit

ok I've solved the problems above... the only problems are reversing the image and the sizes. is the layout in Thorsten site 1:1?

ok I've solved the problems above... the only problems are reversing the image and the sizes. is the layout in Thorsten site 1:1?

Hi guys, I was thinking to photoetch a board. I downloaded .BRD CORE module layout for Eagle to print the master. How to eliminate all the components from the layout, to show only the tracks? Will the printed result be the reverse image of the board? THX for help, post off tips too! I'm a newbie ;D

Hi guys, I was thinking to photoetch a board. I downloaded .BRD CORE module layout for Eagle to print the master. How to eliminate all the components from the layout, to show only the tracks? Will the printed result be the reverse image of the board? THX for help, post off tips too! I'm a newbie ;D

thank you ;)

am i obliged to use acid to retrieve SID from c64 mother board or there is a better method to achieve this objective without damaging the pins? thank you! ;)