Search found 16 matches

by pauloman
Thu Jan 02, 2014 12:12 pm
Forum: Epoxy
Topic: Novice Epoxy Question
Replies: 6
Views: 2189

Re: Novice Epoxy Question

Better to use thick plastic vs wax paper. Always a concern about leaving some wax on the epoxy surface (and do use a non blushing epoxy) first sealing coat of epoxy can be solvent thinned to help soak in a tiny amount. At least two coats needed unless under more epoxy and fiberglass cloth then just ...
by pauloman
Sat Aug 24, 2013 8:11 am
Forum: Epoxy
Topic: Removing Amine Blush
Replies: 3
Views: 2906

Re: Removing Amine Blush

always use a non blushing epoxy - save the blushing stuff for newbies
by pauloman
Wed Jul 31, 2013 7:40 am
Forum: Epoxy
Topic: Mixing Brands of Epoxy
Replies: 12
Views: 7254

Re: Mixing Brands of Epoxy

Bill - I stand by what I said - if it hardened up - no worry. I've been the owner of an epoxy company for 20 years and have epoxies formulated to my specs, as well as probably selling more kinds of epoxy (and from more sources) than anyone. I made my living from epoxies - I think I know what I'm tal...
by pauloman
Fri Jul 26, 2013 8:14 am
Forum: Epoxy
Topic: best way to remove unset epoxy
Replies: 15
Views: 12078

Re: best way to remove unset epoxy

you mixed a volume mix ratio using a weight mix ratio which is different

Paul Oman - MS. MBA
A.K.A. “Professor E. Poxy”
www.epoxyfacts.com
epoxies since 1994
Member: NACE (National Assoc. of Corrosion Engineers) -- SSPC (Soc. of Protective Coatings)
by pauloman
Mon Apr 01, 2013 11:59 am
Forum: Epoxy
Topic: temps and epoxy
Replies: 4
Views: 2428

Re: temps and epoxy

epoxies can be used at those temps but if using 'regular' speed curing agents pot life and working time will be very short. Sometimes the epoxy sort of wrinkles on the hot surface (which can be much hotter than the air temp). epoxy setting is a chemical reaction which means pot lfie / cure time doub...
by pauloman
Mon Apr 01, 2013 11:53 am
Forum: Epoxy
Topic: cloudy epoxy
Replies: 8
Views: 3192

Re: cloudy epoxy

epoxies will turn white if the get moisture on them during a critical period after application. this is much more than amine blush - even non blushing epoxies have this happening. Common cause is dew or condensation (or even bird pee or splashing from a nearby swimming pool). Might be just the right...
by pauloman
Mon Apr 01, 2013 11:49 am
Forum: Epoxy
Topic: Amazing goop supermend?
Replies: 3
Views: 2046

Re: Amazing goop supermend?

viewing of the MSDS shows it to be an ordinary low end epoxy with thickeners. I like the epoxy putties that use Kevlar (tm) as the thickener.
by pauloman
Mon Apr 01, 2013 11:46 am
Forum: Epoxy
Topic: System 3 C.P.E.S.
Replies: 8
Views: 3689

Re: System 3 C.P.E.S.

that product (we don't mention their name) is mostly a blend of cheap solvents (69%) mixed with a bit of no info epoxy (31%) - so you are really spraying solvent all over the place. Urban Legend (don't know if true - probably not) has someone using that product in an boat engine room. Boat exploded ...
by pauloman
Mon Apr 01, 2013 11:39 am
Forum: Epoxy
Topic: learning
Replies: 6
Views: 2810

Re: learning

my epoxy mentor was the tech director and plant manager for intl paints before starting his own epoxy company. He was very aware of potential epoxy sensitivity concerns but had no problems with ordinary latex gloves. Of course most of these epoxies are solvent free. Might be a different issue if usi...
by pauloman
Mon Apr 01, 2013 11:25 am
Forum: Epoxy
Topic: Epoxy won't set up.
Replies: 14
Views: 5344

Re: Epoxy won't set up.

experienced epoxy folks get sloppy and sometimes don't get the mix ratio right or sloppy mixing. I had one 'customer' tell me that I didn't tell him he had to mix the epoxy vertically in the bucket as well as just spinning his mixing stick in one place. It is common for pouring epoxy table tops or b...
by pauloman
Mon Apr 01, 2013 11:18 am
Forum: Epoxy
Topic: Are the Glen-L kits enough? Advice on epoxy, solvent, etc.
Replies: 8
Views: 2958

Re: Are the Glen-L kits enough? Advice on epoxy, solvent, et

guessing the amount of epoxy is really hard. Some folks want the texture of any fiberglass used with epoxy to be buried with additional coats of epoxy. That could take 2-3 more coats. Other folks think the fiberglass weave adds non slip texture and don't worry about it. Also, most folks mix up more ...
by pauloman
Mon Apr 01, 2013 11:08 am
Forum: Epoxy
Topic: Second coat of fillet?
Replies: 3
Views: 2081

Re: Second coat of fillet?

I always found that I would epoxy/fiberglass tape the inside seams of my small stitch and glue projects and then just use the fillet to give a smooth and attractive look to the seam rather than the rough uneven and bumpy surface left behind by the epoxy and fiberglass tape. Sure the fillet adds stre...
by pauloman
Mon Apr 01, 2013 9:11 am
Forum: Epoxy
Topic: Do you need to use glue powder when laminating
Replies: 13
Views: 4257

Re: Do you need to use glue powder when laminating

the key issue with epoxy gluing is not to clamp too tightly and squeeze out all the epoxy. And you want the epoxy thick enough not to drain out. Tricks include gouging the mating surfaces and adding coarse ground walnut shell to the epoxy so you cannot squeeze it completely shut and drive out all th...
by pauloman
Mon Apr 01, 2013 8:18 am
Forum: Epoxy
Topic: Mixing Brands of Epoxy
Replies: 12
Views: 7254

Re: Mixing Brands of Epoxy

if it hardened up fine not to worry. As good or better than the right resin with the right hardener mixed a bit off from the correct mix ratio.
by pauloman
Mon Apr 01, 2013 8:15 am
Forum: Epoxy
Topic: Thinning epoxy for penetration?
Replies: 13
Views: 6338

Re: Thinning epoxy for penetration?

cpes is 69 % cheap solvent and 31% cheap epoxy. - more of a solvent thinned with epoxy than the other way around. the epoxy chemists I deal with professionally generally say thinning up to about 10% is fine. Above that it weakens the epoxy, which is fine if not being used for structural applications...