Originally Posted by
glockfan
hey guys!!
i'd like to recap a little ,from the experiences done here by some regulars of this thread.
specifically the question about the FIRST COAT.
do you all agree that the first coat should be diluted with acetone a tad more ? It would not hurt at all if you applied a more diluted first coat. This allows quicker drying and less adhesion failures. Adhesion failure with first coat is by applying thick first coat, which forms a skin, and will not dry, especially in cool humid conditions. If you use standard coating mix, after applying it at normal rates, it is better to warm air dry at about 45-50C for half an hour or more. This will ensure that trapped absorbed moisture is dried from this firs coat. Then test bake only a few, cool and test as normal. If it fails adhesion, keep on drying bulk lot. Then at another 15 minutes or more, test bake a few more, and repeat this until you get a pass. Only then bake the bulk.
i'm done with different experiences done in small batch,following the recipe religiously ,and sometimes my first coat doen't bond like it should probably because too thick ,and in the light of what your results are, i'm tempted by diluting the mix some more .Dilution works. Until first coat is thoroughly dry, irrespective on applied thickness, it will fail adhesion test
tomorrow i will go through out 50lbs of 9mm boolits,and i know that the first coat is crucial . if the 1st coat bond really well,then the 2nd is a breeze and we can apply a thicker coat.That is correct. Don't worry about using standard coating mix for first coat. Simply warm air dry thoroughly before baking. All should be well afterwards
the only thing i'm suspecting is, if i go thin on the 1st coat, i might have to add a 3rd one,which i don't find exciting at all. Not necessarily. First coat is primer adhesion stage. Second coat will bond to first well bonded coating. That should be enough
i like the results obtained by 2 thick coats ; all pores are filled,and the boolit with 2 well bonded thick coats is a good insurance against leading . i'm just wondering if 1 thin and 1 thick coat will do the job, i react that,perhaps the coverage might be too thin?These coatings do not need thick applications, They normally apply about 1.5 to 2 thou onto alloys with two coats. That is plenty.
is there a consensus on this question ?