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Why is alcohol better to use than water when it comes to mixing with paint for filling in the mortar cracks on structures? I used water on two previous buildings mixed with gray Pollyscale paint, and the problem I'm having with it is that the cracks fill up and look good for about 20-30 seconds or so and then disappear, then the brick is left with some gray paint on it and very little if any in the mortar cracks. Some small spots look great, but most don't. I'm trying to get the right mixture of paint and water, thinning it down, etc., but as a newbie I guess I'm still not getting it correct, as I'm not happy with the results. I haven't used the alcohol so far because we only have the 70%, not the 91% or whatever. <br /> <br />But does the alcohol/detergent/paint mixture work the best (instead of the water/paint mixture) when it comes to filling in the mortar cracks? Will I see better results with the alcohol/paint mix? Will the alcohol/paint mixture cause the paint to stay in the mortar cracks better than the water/paint mixture does? And what does the detergent have to do with it? I'm currently working on the Bachmann 'Spectrum' Series 'Cityscenes' Department Store, with 2 large walls with lots of brick. The other 2 walls aren't too bad.
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