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Old 02-12-2017, 07:40 AM
AnatomicalHeart AnatomicalHeart is offline
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Join Date: Feb 2017
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Hard Ground has Streaks

Hello,

I'm in the process of grounding a copper plate with Charbonnel liquid hard ground. I've used homemade hard ground before which is much thicker. It's my first time using the Charbonnel pre made stuff and it's going on the plate very streaky. Will the streaks effect the plate after its exposed to ferric chloride or does it matter? If so, does anyone have any tips for applying this type of ground? I was also curious as if this the of ground needed to be heated on a hot plate or not.

Thank you.
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Old 02-12-2017, 03:33 PM
contumacious contumacious is offline
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Join Date: Dec 2016
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Re: Hard Ground has Streaks

Quote:
Originally Posted by AnatomicalHeart
I was also curious as if this the of ground needed to be heated on a hot plate or not.

Thank you.

I found that a hot plate was needed when I used that particular hard ground to get an even application. Variations in the thickness that show as streaks aren't necessarily going to cause problems but the more uniform you can get it the better.

If you don't have access to a hot plate an old warming platter from the thrift store works OK. If one of those doesn't get hot enough a pancake griddle or a large electric skillet with the raised lip around the outside removed so it is flat across the entire surface will work extremely well. If you need a larger hot plate you can bolt a sheet of 1/4" thick aluminum plate to the modified griddle. If you need a BIG one then use more than one griddle with an appropriately sized aluminum plate.
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Old 02-12-2017, 07:03 PM
AnatomicalHeart AnatomicalHeart is offline
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Re: Hard Ground has Streaks

Thank you for answering my questions. I do have access to an industrial hot plate it just takes a while to get to it, so I was trying to avoid it if possible, but I'll go ahead and use it. I'm relieved that the streaks won't cause too many problems.
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Old 03-07-2017, 04:51 AM
Jeffro Jones Jeffro Jones is offline
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Re: Hard Ground has Streaks

If the liquid ground seems too thick, it can be thinned so it flows a bit better. This may help the streakiness. Try adding a little turpentine if you think that is the problem. Liquid grounds can lose some of their diluents and thicken up over time.


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