What Are Fish Eyes In Epoxy?

Is epoxy safe to use on cups?

If you’re making tumblers, you need to be sure that the epoxy resin you’re using is food safe after it’s cured and becomes an inert plastic.

Even “food safe” is a bit misleading, because in the case of epoxy, “food safe” only means that you can put it on the outside of food and drink containers — never inside..

How do you get bubbles out of epoxy?

Most epoxy resins are flammable, and a flame should never be placed directly on the surface. To remove small bubbles when the resin is still wet, use a hot air gun, or blow dryer, directly above the bubbles and it should vent out and fill with resin.

Will acetone remove cured epoxy?

Remove epoxy resin with acetone Acetone is another simple but effective way to remove resin. Similar to vinegar, acetone is found in almost every household. Put some of it on a cotton swab and rub the affected area until the epoxy resin can be removed.

How do you fix air bubbles in cured epoxy?

Yes, you CAN get rid of bubbles after your resin has dried! Simply sand down the entire surface of your piece, making sure you pay special attention to the areas with bubbles. Wipe away all the sanding residue with a damp paper towel.

Why am I getting dimples in my epoxy?

The most common reason that these occur is when you do not have enough product. … When you don’t use enough product, it will stretch in areas and cause a fisheye. Another reason why your wet epoxy might have fisheyes is due to trying to spray the alcohol onto the surface once it has begun to set up.

How long do you turn epoxy tumbler?

How long do you spin a tumbler? Apply epoxy, smoothing it up and down the tumbler while you rotate it slowly. See videos in post for full instructions. Continue rotating for 4-6 hours depending on temperature.

How do I get rid of fish eyes in epoxy?

Lightly sand the existing epoxy with 120-150 grit. Care should be taken not to cut through the stain. Apply another seal coat of epoxy using an 1/8″ nap foam roller, working to fill in the craters. Allow the epoxy to cure hard, sand entire application flat, and re-coat to finish.

What causes fish eyes in epoxy?

Substrate contamination is the most common problem that causes fish eyes and pin holes in epoxy seal coats. Dust, dirt, wax, silicones, even the oil from your fingers when touching the part prior to sealing with epoxy will deter epoxy resins from laying flat and curing with a perfectly smooth surface.

Does epoxy hardener go bad?

All epoxy resins and all epoxy resin hardeners have a shelf-life. The shelf life of the epoxy resin itself tends to be quite long (2-3 years) but the hardeners are more sensitive and should really be used within 1 year.

Can you pour epoxy over epoxy?

Can I put another coat of epoxy over cured epoxy? Yes. Since the epoxy has cured a chemical bond is not possible so what is called a mechanical bond is needed. This simply means that the cured epoxy has to be lightly sanded before the next coat is applied: the first coat should have a matt, almost white, surface.

What are fish eyes on tumblers?

Fisheyes or divots are generally caused when there is not enough resin on the surface of the project for the resin to self-level. To fix this issue, you will want to ensure you add enough resin to self-level and completely cover your surface.

Can you spot fix epoxy?

An uneven hardening of your epoxy resin can lead to dull, or even tacky spots. To fix an uneven epoxy finish, wait until the epoxy has dried thoroughly, and then sand it lightly with fine-grained wet sandpaper. … This will allow the epoxy to self-level, giving you an excellent finish.

Do I need to sand between coats of epoxy?

Some projects are more porous than others and may need help spreading the epoxy effectively. Then you’ll begin sanding epoxy resin between coats. Sanding epoxy isn’t hard, but you’ll want to be thorough! Sand the entire piece evenly.

How do you smooth epoxy?

Sanding epoxy resin wet or dry? Wet sanding with waterproof sandpaper is often the best approach to sanding cured epoxy resin. Wet sanding removes unevenness while you are sanding, reduces clogging of the abrasive paper and drastically reduces the amount of dust emitted into the air.