Let us know how it turns out. I got the shipment and made a gallon of the binder using the recipe I referenced omitting the Proxel GXL. Note that there is a typo I think its 7.5 g not 7.5 mg of Potassium Sulfate. I have two prints with it and one more printing now. So far so good.
Has anyone tried Ultracal 30? I think I’m going to give it a try. The mixing directions call for much less water than Hydroperm which I think may be a benefit for printing? I’m guessing it would be stronger too.