Blaize110 Posted March 2, 2010 Share Posted March 2, 2010 Someone at my school has asked about projecting a logo using a scanner and having it scan around the room. After reading around, I have got him to print some logos off on acetate. However the only scanner I have is a cheapo disco one (Prosound Smart Scan 2). It uses a 150W 15V bulb and going through gobo and colour wheels. My plan was to attach the little piece of printed acetate over the open gobo on the wheel so it would project. I have tried this and it did project so the proof of concept is there. My problem is the heat from the bulb, at the moment I've used small bits of masking tape to attach it but I highly doubt this will work in the longer term. Also, if used for a prolonged period of time I am worried that the acetate may melt. However being a cheapo scanner, there is no focussing of the bulb before the wheels (other than the reflective back of the bulb) and the colour wheel comes before the gobo wheel so the heat exposure will be reduced slightly. Plus there is a fan on the back. Can anyone suggest a heat-resistant way of attaching the acetate? I have considered Black Tack (the tape not the putty) but dont particularly want to buy a whole roll for a tiny piece, it is also needed for Thursday. If all else fails then I will try the acetate in a standard lantern. Link to comment Share on other sites More sharing options...
james.sealey Posted March 2, 2010 Share Posted March 2, 2010 YOu need some sort of heat resistant glue, or perhaps Araldite(sp?). I'm no lampy but I would expect the acetate to last about 5 mins inside a fixture, although I may be wrong... Link to comment Share on other sites More sharing options...
osal Posted March 2, 2010 Share Posted March 2, 2010 erm it wont last very long at all made me think about this video http://www.youtube.com/watch?v=VtuXfPT5Zcc I know it has nothing to do with movers but you get the idea Link to comment Share on other sites More sharing options...
Blaize110 Posted March 2, 2010 Author Share Posted March 2, 2010 Hmm, It is the heat-resistant kind of acetate that goes in laser printers and OHPs. People have said that this has worked as a temporary measure in another thread (Custom Gobos). I think perhaps some trial runs whilst whatching it carefully may be in order. The problem with a glue is that I would like to be able to remove the acetate afterwards and use the open gobo again. Link to comment Share on other sites More sharing options...
david.elsbury Posted March 2, 2010 Share Posted March 2, 2010 Correct, but as in that thread, you need a fixture which has a "cool beam" - less heat in the beam means the acetate has a chance to actually work instead of melt. The Selecon Pacifics are one such option, though I beleive you are limited to a 650w bubble. You also need to use the correct heat shield gobo holder. Link to comment Share on other sites More sharing options...
Jeremy MLS Posted March 3, 2010 Share Posted March 3, 2010 The Selecon Pacifics are one such option, though I beleive you are limited to a 650w bubble. I've made plenty of acetate gobos for our 1000w pacifics and they last fine so long as the lamp is set as low in the holder as the peak/flat adjuster will allow. Just bare in mind that gobos with a lot of black in them will burn out a lot quicker than those of lighter colours. Link to comment Share on other sites More sharing options...
Ynot Posted March 3, 2010 Share Posted March 3, 2010 Sorry, but cheap scanner+acetate+glue/masking tape/blak tak/whatever = FAILURE. To do what you want, you need a quality luminaire with a gobo wheel that can accept replacement gobos, and to get such a custome gobo made up by one of the gobo distributors. There won't be many tapes/glues (if indeed any) that will last long in front of even a 250W light source. A concurrent post has been automatically merged from this point on. The Selecon Pacifics are one such option,But as the OP wants a scanner to waft the logo about, the only option with a Pacific is to slap a mirror attachment on the front... Link to comment Share on other sites More sharing options...
Bryson Posted March 3, 2010 Share Posted March 3, 2010 Rental of a Pacific with an I-Cue is probably cheaper than a custom Gobo, though. Depends how long it's for. Link to comment Share on other sites More sharing options...
David A Posted March 3, 2010 Share Posted March 3, 2010 your aceteate, wedged between 2 pieces of glass and stuck on with gasket goo or similar will probably work perfectly well. Link to comment Share on other sites More sharing options...
timmeh2 Posted March 3, 2010 Share Posted March 3, 2010 your aceteate, wedged between 2 pieces of glass and stuck on with gasket goo or similar will probably work perfectly well. Hi On the end of a Selecon or inside his scanner? All the bestTimmeh Link to comment Share on other sites More sharing options...
Ynot Posted March 3, 2010 Share Posted March 3, 2010 your aceteate, wedged between 2 pieces of glass and stuck on with gasket goo or similar will probably work perfectly well.Er, OK, maybe...IF he can get 2 pieces of lightweight glass cut to exactly the right diameter to fit his disco scanner... Link to comment Share on other sites More sharing options...
Pattern123 Posted March 3, 2010 Share Posted March 3, 2010 Use a projector, your school is bound to have some data projectors, it takes a few seconds to put the image on a black background in powerpoint, and you can find somewhere to put the projector with a little inventiveness I'm sure. Link to comment Share on other sites More sharing options...
mac.calder Posted March 3, 2010 Share Posted March 3, 2010 Even IF you manage to get it to adhere, and the acetate to stay intact and not turn into a small bit of goo, the next issue is ink fading really quickly or running due to heat. It is not really a viable option. Link to comment Share on other sites More sharing options...
greenalien Posted March 3, 2010 Share Posted March 3, 2010 Sandwiching it between 2 pieces of glass will certainly give some protection, I'd suggest microscope cover slides - very thin and easily obtainable. Use silicon RTV to attach it and it will be easily removable, but the heat won't melt the adhesive.However, using a video projector is a much better idea! Link to comment Share on other sites More sharing options...
David A Posted March 3, 2010 Share Posted March 3, 2010 it's only a 150 watt projector and he wants it to move around, if it was a 600 hmi I could see a problem but for a short time I am sure my suggestion will work fine, many other ideas are wonderful give a budget, which he hasn't got, and if it fails after some time he will have learned something.No one seems to have addressed how to scan the video projector around the room. Link to comment Share on other sites More sharing options...
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