Is there a way to thin it at all so that I might occasionally use it to spread it more thinly ? Even some method of getting it of my hands would be handy to know.
Between the lines, I'm guessing you don't use the appropriate spreading or beading tools. Few people know of them. With all such caulk or adhesives I use rubber
tools. The beading tool is little more than a rubber spatula: the trick is to apply too much from the tube, then plough that away before it skins, frequently plucking excess from your tool with toilet paper. This compresses the caulk into cracks and finishes it with perfect geometry. Never use your finger! Once cured, any glue peels clean off the rubber tool. For surface spreading, you'll probably improvise a rubber spreader... I personally have a collection of spreaders re-purposed from consumer trash ... that work for tile grout, contact cement, whatever.
thanks. Yes those plastic rectangular spatulas that come with other products such as polyester body fillers are really easy to clean once the mastic has cured. They are ,more or less non stick and are also slightly flexible so that you can just lever it off afterwards
Actually the Ms Polymer mastics don't really need thinning (as you said)-it was just something bothering me.
For the cheap silicon mastic I sometimes thin it with white spirit and apply it to cloth or fabric as a way of waterproofing them but had the feeling this would not work with Ms Polymers .
I have bought some methylated spirit now . I have never used it before except for blow torch fuel (I think those must be museum pieces now).