stuartm Posted September 3, 2008 Author Share Posted September 3, 2008 Would PCB's withstand that kind of heat? Link to comment Share on other sites More sharing options...
Jivemaster Posted September 3, 2008 Share Posted September 3, 2008 More -if you can etch a PCB then you could etch a piece of sheet copper, brass or steel shim and make a gobo. PCB material would be no good as the board is opaque!!. A concurrent post has been automatically merged from this point on. I think Gobomaker had some chemicals that were less than friendly. Saw it at Plasa ....ago but never in life. Link to comment Share on other sites More sharing options...
dbuckley Posted September 3, 2008 Share Posted September 3, 2008 Would PCB's withstand that kind of heat? No - but a litho plate which is what I suggested etching certainly does. Link to comment Share on other sites More sharing options...
stuartm Posted September 4, 2008 Author Share Posted September 4, 2008 PCB material would be no good as the board is opaque!!. Whoops, never thought of that. I'm a bit confused at what litho plate is - I have a fair idea but where is it readily available? Link to comment Share on other sites More sharing options...
Neil Hampson Posted September 4, 2008 Share Posted September 4, 2008 The last custom Gobo that ROSCO made up for me came out at £67 (I still have the invoice on my desk as the client would not pay for it) Can you please let me know who is offering custom gobos for; We tried to source them before and found around the £30-35 mark. The image isn't too complex, I think it would be worth trying to cut this with a scalpel and some catering foil. I would never recommend using tin cans or drinks cans as they are too thick to cut accurately with a scalpel and the sharp edges become dangerous. The blades that I use are a Surgical No.11 and sometimes, depending on supply, the mircoblades, these would be blunt on the first cut with anything like a tin can. The problem with the foil is that itis very fragile as it can be torn easily if handled with anything but the upmost care, however due to the extremely low thermal mass they tend not to burn like a thicker steel gobo. I have foil gobos that have lasted long after a steel one has burned away to nothing.I used to offer custom gobos to people on the blue room (see this thread for examples) but as not one person actually bothered to pay, dispite offering I don't bother to offer any more. Edit:- Corrected the link to actually point to a post Link to comment Share on other sites More sharing options...
stuartm Posted September 4, 2008 Author Share Posted September 4, 2008 Wow Neil, they are really nice, if only we had thought to look two years ago - if you start offering again send me a PM they are really nice. The site we found them for £30-35 was actually Rosco offering a schools discount. Link to comment Share on other sites More sharing options...
mr_cahonjes Posted September 4, 2008 Share Posted September 4, 2008 The couple of times I've gone about making gobo's its always been a cleaned out circle of metal off a drink can, stanley and a block of wood.... oh and patience!!! Link to comment Share on other sites More sharing options...
The Gaffa Posted September 5, 2008 Share Posted September 5, 2008 Can I suggest the following? If using a Selecon, you could make your gobo out of 150 / 180 micron OHP sheet, and a good laser printer, but if you're using black you'll need to change it to grey. I know this works as I've made quite a few full colour gobos using this method, and they've lasted for a weeks run. Clicky Link to comment Share on other sites More sharing options...
adam2 Posted September 10, 2008 Share Posted September 10, 2008 Many years ago, I remember making a gobo by taking a piece of glass, smoking it over a candle until uniformly black, and then producing the design by scraping of the soot with a pin or matchstick etc. The glass will get extremly hot and ordinary window glass would be liable to shatter, we used heat proof tempered glass as is used on high wattage outdoor floodlights etc. Link to comment Share on other sites More sharing options...
Mr Steve Posted September 11, 2008 Share Posted September 11, 2008 I've had sets of custom gobos made by Goboland (Vicky Fairall is their UK contact person). They will cut steel gobos for around £30 for the first, and then £10 per additional copy. They also keep your design on file, so if you need more in a year or so, you can quote the design number and get them easily. Link to comment Share on other sites More sharing options...
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