BobP

I’ve clearcoated hundreds of baits with D2T epoxy, moisture cured urethane (MCU), and Chinese uv cured resin. I really like MCU for it’s ease of application, gloss, and toughness in a thin coating. I like uv resin for its quick cure. I like D2T because it’s tough in a thick coating that resists hook rash. But there are quirks to each choice and each can have problems. MCU often has storage problems. UV resin (the Chinese brand I tried) became sticky months after curing. D2T will eventually yellow (but if measured and mixed really well it will be some years). Choice may vary according to what you build, how often you build, and the purpose you build for. I’m an occasional hobby builder. I like the advantages of MCU and UV resin but my default has long been D2T. It’s still chugging along when my UV resin has failed and my MCU has turned to jelly in its storage can.

The rubber band method is only needed for fat/round baits like a square bill. If the bait has flat sides, you can cut a slot without any tricks. I use a thick rubber band, the kind used to package celery, etc in a supermarket. Stretch it over the front of the bait until a side of the band looks like the correct angle and alignment, the mark it with a Sharpie and cut the slot.

I work in wood and cut lip slots while the baits are still “square”, but have been given some poured baits to assemble. I used a thick rubber band stretched over the bait’s nose to find the right lip position and cut the slot with either a Dremel or a saw. If the slot ends up a little ragged, no problem because I mount lips with Rod Bond paste epoxy which doesn’t run. If the slot is REALLY large and rough (when I have to cut out a damaged lip) I use an epoxy putty log. My basic point is that there aren't many lip slot problems that the right kind of epoxy can’t fix.

Amen to that.

I have no idea what “liquid glass” is. Epoxy is fairly resistant to chemical reactions with underlying coatings. You didn’t specify what brand/type of epoxy you used. The pic looks like it might have been a fast cure variety. If it is, that’s your problem. If it’s slow cure variety, which takes at least 30 minutes to harden (the correct type to use) then you need to consider your epoxy mixing and application techniques. Why do you apply acrylic varnish between the color and the epoxy? I can’t think why it’s needed. Without looking at your process while you do it, its hard to evaluate where the problem is. I try to keep it simple. Measure it well, mix it very well. Apply with a soft brush, rotate it without heat until hard.

I believe the problem is the acetone contained in your paint. If your paint contained lacquer thinner, denatured alcohol, or (probably best) water as a thinning agent, I think epoxy would not be a problem.

Yes! Thanks for the assist.

The DN referred to is Dick Nite Fishermun’s Lurecoat, type S81. In the decade since the post, another MCU option has also become popular, a MCU sold by automotive online stores (can’t remember the product name -a little help please!)

wood choices: most builders experiment to settle on the wood they want to use on their crankbaits. With experience, you realize producing a crankbait that performs well requires limiting the variables that can otherwise screw things up. One important variable is wood density and the workability of different wood species. It doesn’t matter which wood you decide is right for you. What matters is gaining experience using it. How to shape it, how to ballast it, how to finish it. Eventually you need to settle on a limited number of wood species because if you don’t, your baits will tend to disappoint you. At least that’s been my experience building baits for 20+ years.

I catch redfish in the surf using a standard Carolina rig and finger mullet. Seems to work ok. There are all kinds of rigs I see used in salt water. Most of them work if you are fishing with “live” bait. Some of them work well with soft plastics, depending on what the targeted species is.

I use a scroll saw. It’s much slower than a band saw but cuts shapes more finely. I use standard 12 tpi blades. If you’re cutting hard wood, it can be REALLY slow. If you’re cutting balsa, it’s plenty quick. I haven’t found any problem regarding the width of wood but if you plan to build large musky baits or glide baits, especially out of a hard wood, a band saw is really the choice.

I only use denatured alcohol. Maybe isopropyl might work BUT I think most of it is sold cut with at least 30% water. I definitely would not use acetone. Tried that and the result was not good. I say bite the bullet and buy a can of denatured at the home center. It will last a long time and you can use it to clean epoxy off your brush too.

When you mix epoxy you start a chemical reaction at the molecular level. If the epoxy is measured accurately and mixed very thoroughly, you get a good finish that’s tough and resistant to yellowing. So I measure with syringes and mix the hell out of it, disregarding any air bubbles introduced. After mixing, I stir in a FEW drops of denatured alcohol and that expels bubbles. I paint it on the lure with a nylon bristled artist brush. Its fine bristles get it on the lure without generating any new bubbles and tend to pop any stray ones that remain. Clean the brush with solvent and it lasts indefinitely.

I think any slow cure epoxy is fine. D2T, Flexcoat, Envirotex Lite, etc all work. Epoxy’s advantage? It’s tough and thicker than most other options so resists impact and hook rash better than most. The only thing maybe better is a good UV resin, which is also thick and even tougher;than epoxy.

Hmm, ease of use and durable smooth finish? My vote goes to KBS Diamond Coat. Dip the lure, hang it up to dry/cure. Voila, you’re done. Whatever clear you choose has peculiarities of application. You just have to dive in and see for yourself what you like best.