Inspired by a recent discussion. The question of where to put the extra layer of cloth ? Some add the extra layer, on top of the main cloth layer. While others add it beneath the main layer
Putting the extra layer underneath, saves a lot of feathering. ! Which I'm all for !
Wanting to convert my method to this, I set up two tests.
In one test the E-glass was on top, and in the other test, it was on the bottom of the S-glass.
In both tests, I used one layer 6 oz E-glass, and one 6 oz layer of S-glass.
I miked both layers dry, and came up with .009 on each. Not very much. I haven't, but I will measure wetted out cloth.
I rolled on two coats of resin and let cure. I wish I would have added enough coats to completely fill the weave !
The lap joint was clearly visible.
Once cured, I used a straight edge carbide scraper and pulled it across the lap joint of the two layers. In both cases, the carbide scraper removed weave of the top layer, about a 1/4" wide.
Like I stated, I wish I would have completely filled the weave in this test !
Judging by this test, I will continue to place the extra layer, on top .
Any comments welcome as always !
Jim
Putting the extra layer underneath, saves a lot of feathering. ! Which I'm all for !
Wanting to convert my method to this, I set up two tests.
In one test the E-glass was on top, and in the other test, it was on the bottom of the S-glass.
In both tests, I used one layer 6 oz E-glass, and one 6 oz layer of S-glass.
I miked both layers dry, and came up with .009 on each. Not very much. I haven't, but I will measure wetted out cloth.
I rolled on two coats of resin and let cure. I wish I would have added enough coats to completely fill the weave !
The lap joint was clearly visible.
Once cured, I used a straight edge carbide scraper and pulled it across the lap joint of the two layers. In both cases, the carbide scraper removed weave of the top layer, about a 1/4" wide.
Like I stated, I wish I would have completely filled the weave in this test !
Judging by this test, I will continue to place the extra layer, on top .
Any comments welcome as always !
Jim
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