Theatre Australia

your portal for australian theatre

Blue lacquer for hi temp halogen lights....................

Fri, 19 Dec 2008, 03:44 am
Peter Probert9 posts in thread
I have purchased some of these rectangular shaped halogen work lights. They operate at hi temp (500w lamps). I am contemplating colouring blue. Clear lacquer on the glass will burn, gels equally will melt (unless sandwiched between hi temp glasses). Any one have any thoughts? For discussion please.... Peter

Thread (9 posts)

Peter ProbertFri, 19 Dec 2008, 03:44 am
I have purchased some of these rectangular shaped halogen work lights. They operate at hi temp (500w lamps). I am contemplating colouring blue. Clear lacquer on the glass will burn, gels equally will melt (unless sandwiched between hi temp glasses). Any one have any thoughts? For discussion please.... Peter
jeffhansenFri, 19 Dec 2008, 07:08 am

I have several 500W cyc

I have several 500W cyc wash floods that have a gel holder, and have never had trouble with the gel melting. I'm guessing you are refering to the el cheapo $15 floods that you get from Bunnings? Not sure what the answer is for those. Wasn't this asked recently? www.meltheco.org.au
strand530Fri, 19 Dec 2008, 08:29 am

coloured lights

Rosco Colorine is a product which proffesionals use.
JoeMcFri, 19 Dec 2008, 12:07 pm

ROSCO Colorine'

Just a thought is to check out the 'Meta rial Datta Sheet', as a guide.

The product may help & it could be a worth while idea?

Rosco Datta Sheet;-

http://www.roscobrasil.com.br/americasul/america/html/technotes2/pdfsdocs/colorine.pdf

I don't know if it could with stand to the temperature, generated by the Halogen bubble.But it could be of value?

G'donya STRAND 530!

I was starting to think on the lines of reflection or another weird things like an air gap, but that would be as useful as boobs on a bull - so I'm not much help!

ashmanFri, 19 Dec 2008, 12:18 pm

Suggestions

Both Rosco and Lee make hi-temp gels which will hopefully do the job. If not then you could go with an appropriately coloured dichroic glass but it will probably cost you more than the buying a set of lights similar to those that Jeff has. Failing that, I have successfully used the 500w bunnings floods with standard gels by mounting the gel outside the wire grille and cutting it oversize so you don't get open white spill. I am surprised that it makes any difference to the melting point when you sandwich the gel between glass. Most glass won't absorb much infra-red radiation (compared to a blue gel which absorbs a lot) and sandwiching it only cuts down on airflow which is the primary method of cooling for a gel. Be aware that the cheapo 'gels' that you can get are often just cellophane which will melt in no time. And yes Jeff, there does seem to be an echo around here.
ashmanFri, 19 Dec 2008, 12:24 pm

Rosco supergel

Rosco supergel info: http://www.rosco.com/australia/filters/supergel.asp#SPECIFICATIONS Lee Hi temp gel http://www.leefilters.com/lighting/products/finder/ref:C46544C3EE7295/
Peter ProbertSat, 20 Dec 2008, 09:47 am

Thanks Guys re Hi Tremp Blue.....

Thanks your feed back - yes the lamps are the el cheapo Bunning’s variety but that's not the point - the "fittings" contain the standard oblong type halogen lamp. I am following up on your suggestions - muchus gracias
Don AllenMon, 22 Dec 2008, 08:52 am

If you go to the Rosco

So long and thanks for all the fish
Peter ProbertTue, 23 Dec 2008, 05:04 pm

Blue coloured 500w Halogen lamps etc..........

Thanks the above. We are using a theatre with fully equipped pro rig/ dimmers/ DMX etc. The idea of using the halogen floods was mine since they are inexpensive and give a good output. I will persevere with the coloured glass concept. I noted on Channel 9 TV the other day that similar "stick” halogen lamps were sighted in fixtures. I will sound around. I am going to UK shortly to follow up some leads there. Your contributions greatly appreciated - I will keep you all informed - from an experienced Gaffer of yesteryear – and experimenting - Peter!!
← Back to Tech Talk