No... Yours are 8w unfiltered UV or blacklights. Mine are 4w filtered blacklights. (filtered are the purple/blue ones.) And, by using double film I reduce the throughput a lot. I will be making a better one soon. Will be using 2x8w like yours. My question was what type of "ordinary" tubes was used... KreAture ----- Original Message ----- From: "Alex Holden" To: Sent: Tuesday, April 01, 2003 1:20 PM Subject: Re: [EE]: Etchant tank > On Tue, 2003-04-01 at 12:17, Kyrre Aalerud wrote: > > I use 3x 4w UV tubes and need 15 minutes for single transparancy and 30 mins > > for double. > > Are you perhaps using 30w tubes ? (I'm trying to make a small compact > > lightbox as the one I have is clearly too low power... > > My small commercially made light box has two 8W tubes and takes about 4 > minutes per side (it can only expose one side at a time). Maybe your > tubes are putting out the wrong wavelength of UV? > > -- > ------------ Alex Holden - http://www.linuxhacker.org ------------ > If it doesn't work, you're not hitting it with a big enough hammer > > -- > http://www.piclist.com hint: To leave the PICList > mailto:piclist-unsubscribe-request@mitvma.mit.edu > -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu