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11-10-2017 #1
Being a skin-flint I'm very curious how successful different cheaper epoxies are at self-levelling, so please report back when done.
Had a look on the web and wonder whether you've gone for just the Slow-Hardener or the Extra-Slow-Epoxy-Hardener which seems to me to be closer to the West system that the successful pours on this forum have used?
5:1 Slow Hardener ~ http://www.totalboat.com/product/51-slow-hardener/
• Excellent thin-film characteristics provide smooth flow-out and self-levelling ideal for coating and laminating
• Pot life @ 75°F: 20 minutes
• Set time @ 75°F (thin film): 10 hours
• Cure time @ 75°F (thin film): 1-4 days
Tropical Extra Slow Epoxy Hardener ~ http://www.totalboat.com/product/tropical-hardener/
• Excellent thin-film characteristics provide smooth flow-out and self-levelling ideal for coating and laminating
• Pot life @75°F: 46 minutes
• Set time at @75°F: 20-24 hours
• Cure time at @75°F: 4-7 days
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11-10-2017 #2
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12-10-2017 #3
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13-10-2017 #4
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13-10-2017 #5
Read over more epoxy-related posts before pouring and came across the one by Boyan Sylvaski discussing shrinkage of centered bridge causing distortion in the middles of the rails! Well, I wasn't tearing it down and starting over. So, I did the pour, gave it time to flow out, and then blocked the bridge entrances with razor blades:
Used a heat gun multiple times to get rid of bubbles. I was surprised at how well that worked. You could see the bubbles pop and disappear as you waved the heat gun over. Top looks like glass at this point.
Wallace
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18-10-2017 #6
Pulled forms off today. Not sure if this was because I used the Totalboat epoxy, but I was surprised at the size of the meniscus. I have one side pretty much cleaned up, but I'm guessing I had to file in maybe 5mm from the edge to get rid of it. Does this sound like what most of you see? Nothing to base this on, but I expected it to be a narrow and steep meniscus. I'll try to get a pic of the other side before cleanup.
Linear rails supposed to arrive from China this Friday...Last edited by wallyblackburn; 18-10-2017 at 06:57 PM.
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19-10-2017 #7
I've not done epoxy before but your query may be answered in this excellent epoxy thread :
http://www.mycncuk.com/threads/8197-...-for-levelling
IIRC others have suggested pouring epoxy 40mm wide for 20mm rails to allow for a miniscus of about 5mm and then some.Last edited by AndyGuid; 19-10-2017 at 12:49 PM.
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