This is a "heads up" to those who might be interested. I spoke to Durst last week and they are coming to market with a new 5X7 enlarger that has a new lamp suitable for enlarging negatives onto Azo and Pt-pd. The light source is UV. Their representative indicated that the heat problem that they experience with that 5000 watt lamp for their 8X10 enlarger has been solved to a great extent. Of course the 5000 watt will enlarge on Azo as well. The cost for the 5X7 unit is going to be $5,500.00 and is not suitable for typical photographic enlarging emulsions. The 8X10 unit complete is $12,000.00 and if you have a spare 184 enlarger around and want to upgrade it to the higher wattage lamp source the cost will be $5,500.00 for the lamp house alone. I think that you can buy a Lincoln arc welder for a little bit less then that. My neighbors kid could be taught how to strike an arc just as I get the paper on the easel. So if any of you are really flush and want to contribute to a non profit charitable institution, email me and I will get you my mailing address.