Questions about hairspray: Do you form a “layer” layer or just spray it really thin? Do you aim at “mirror quality”? How long do you wait after spray? Do you heat dry? Any other techniques to help spray?
You must remember my singing the praises of Harbor Freight blue tapes (https://plus.google.com/+YuanLiuTheDoc/posts/19yUXkmPX3C) and frequent quips about its sticking too well to bottom layer (https://plus.google.com/+YuanLiuTheDoc/posts/FyXvfjFUVgw) after a long struggle with first layer not sticking to bed. One problem when tapes stick too well is the need to peel, clean, and reapply every time. Glue stick on HFT tapes can reduce adhesion, but it takes even more preparation, and still doesn’t last more than a couple builds.
Before and after HFT, I had tried glue stick on clear glass, I had tried hairspray on clear glass, I had tried glue stick with hairspray on clear glass. I had always thought the thinner the layer, the more uniform it was. It only occurred to me about a year ago that a “mirror quality” layer of hairspray was very uniform, perhaps more uniform than a thin touch. But a “layer” layer of hairspray (i.e., a pool) requires a lot of time to dry. Lacking patience, I ended up using hair dryer to help. Will this reduce the quality of the adhesive?
Since then, I have had greater success in printing glossy bottom - a neat advantage of Ares 3D, and in multiple builds without reapplication. (Not a great number, but definitely much better than HFT blue tapes.) I have stopped using glue sticks as spray is easier than smearing. (I use dollar-store hairspray for this, so cost is negligible.) Despite testing my patience, a “layer” layer of hairspray gives me better outcome than the best glue stick application I have managed to make.
What is your technique?