Darn spell check. UV as in ultra violetSent from my Samsung S10
-------- Original message --------From: johnd <jo...@autoartisans.com> Date:
2022-02-14 10:33 a.m. (GMT-08:00) To: "Enhanced Machine Controller (EMC)"
<emc-users@lists.sourceforge.net> Subject: Re: [Emc-users] need gcode maker
What about us protection with WEST system?Sent from my Samsung S10--------
Original message --------From: dave engvall <dengv...@charter.net> Date:
2022-02-14 8:05 a.m. (GMT-08:00) To: emc-users@lists.sourceforge.net Subject:
Re: [Emc-users] need gcode maker I typically have gone to West Marine for
epoxy. 5:1 mix ratio with metered pumps. Good idea about avoiding the glass
expander/thickener micro bubbles. :-) Fast, med and slow catalyst
available.DaveOn 2/14/22 2:10 AM, Gregg Eshelman via Emc-users wrote:> Modern
epoxies like the ones sold by Total Boat set up harder and don't yellow like
the epoxies of the 1980's and earlier. An alternative to epoxies are the hard
urethane resins, also typically made with UV protection.>> Total Boat looks
like it's the #1 brand of epoxy used by people making those "river" tables and
mixing all kinds of weird stuff with epoxy to turn fancy bowls on wood
lathes.>>> On Sunday, February 13, 2022, 06:16:31 PM MST, Chris Albertson
<albertson.ch...@gmail.com> wrote:>> It is not the epoxy that is so hard. It
is the filler they mix with the> epoxy. Many times it is a kind of glass, not
unlike what they use to make> sand paper. Other times they mix finely ground
bits of steel.>> I used to use a brand of epoxy that sold bottles of pure resin
and cans of> filler. I could mix what I needed for the job. Sometimes I'd use
"micro> balloon" filler these are tiny hollow balls of glass. A gallon tub of
them> weights about as much as an empty tub. Mixed to a thick paste, it cures
to> a foam you can and with a sure-form rasp. But if you mix the same resin>
with chopped fiberglass or chopped kevlar fiber it is as hard as stone and>
you'd need an angle grinder to smooth it down. I was building small boats> and
canoes.>> Yes epoxy can be damaged by UV light. If doing a gunstock, put 4 or
5> coats of exterior marine varnish over it. The marine stuff has UV blockers>
(sunscreen) in it.>>> _______________________________________________>
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