I’ve since discovered that pourable rubber makes for a better mold material. It’s a little more flexible and less reliant on the mold release spray. I use this: www.amazon.com/Smooth-Silicone-Making-OOMOO-30/dp/B004BNF3TK/ref=sr_1_5?dchild=1&keywords=pourable+rubber&qid=1609080595&sr=8-5
I’ve since discovered that pourable rubber makes for a better mold material. It’s a little more flexible and less reliant on the mold release spray. I use this: www.amazon.com/Smooth-Silicone-Making-OOMOO-30/dp/B004BNF3TK/ref=sr_1_5?dchild=1&keywords=pourable+rubber&qid=1609080595&sr=8-5
So was the fluid thick enough that your insert board "floated" on top to leave the gap, or did you let it cure first and then do a second pour with the insert in?
Well done! Trying to reuse melamine or plywood molds is a pain. Good solution. Question. I'm curious why start with 80 grit after the boards come off the planer. Doesn't your planer leave the surface smooth enough to skip a grit or two? Thanks.
Have you considered making a coffee table or dining table size mold? That's the only thing in my mind for past 2 days. Quite stuck with the decision coz I have never seen anyone make that big mould and that makes me think there must be some cons I can't foresee.
Great result! What is the material that you used for the topcoat? And has the mold been working well since you finished this video? We’re you able to reuse the melamine boards for more than one board in the past? Thanks!
Yes I did. It was one of my first river boards, so I was overzealous. However, I have found that sanding to a very high grit can be useful as it doesn’t give the epoxy much to stick to and therefore allows for easy removal of the excess epoxy that comes over the river channel. But these days I mostly just spray some lacquer on the parts I don’t want to allow epoxy to penetrate.
No. I found that this particular brand of rubber got too hard over time. I’ve started using another brand now: www.amazon.com/Smooth-Silicone-Making-OOMOO-30/dp/B07P89QZJ1/ref=sr_1_11?crid=1S6TBETCX79WD&keywords=Liquid+rubber&qid=1642263089&sprefix=liquid+rubbe%2Caps%2C136&sr=8-11
I’ve gotten to the point where I’m making a very small profit each month. Between ad revenue on RU-vid, sales in my Etsy shop, and the fact that I shouldn’t need to buy any expensive equipment this next year, I think I’ll turn a profit in 2021. Couldn’t live on it, of course, but that was never the goal for me.
No facemask? No repirator? No ventilation and no gloves? Liquid epoxy resins in their uncured state are mostly classed as irritant to the eyes and skin, as well as toxic to aquatic organisms.[54] Solid epoxy resins are generally safer than liquid epoxy resins, and many are classified non-hazardous materials. One particular risk associated with epoxy resins is sensitization. The risk has been shown to be more pronounced in epoxy resins containing low molecular weight epoxy diluents.[55] Exposure to epoxy resins can, over time, induce an allergic reaction. Sensitization generally occurs due to repeated exposure (e.g. through poor working hygiene or lack of protective equipment) over a long period of time. Allergic reaction sometimes occurs at a time which is delayed several days from the exposure. Allergic reaction is often visible in the form of dermatitis, particularly in areas where the exposure has been highest (commonly hands and forearms). Epoxy use is a main source of occupational asthma among users of plastics.[56] Safe disposal also needs considering but usually involves deliberate curing to produce solid rather than liquid waste.[57]
