Can Epoxy Be Used To Repair A Visor
I bought a board second hand with a practiced sized ding, pretty certain information technology was not fiberglassed with epoxy - tin i fix it with epoxy?
Josh
Yep you can. Simply I always try to fix a ding with the same resin used to brand the lath. But yeah, you can apply epoxy to gear up only about anything if information technology'south all you accept. Just make certain you lot sand and crude up the area round the ding because you'll be relying on a mechanical/physical bail to concur the 2 materials together, rather than an chemical bail.
I take used epoxy to gear up an older board I know wasn't glassed with epoxy. I haven't finished the work, but plan on glossing with poly, equally per my usual protocol. I have some other board I need to re-gloss after some remedial work, I'll probably catch upwards on all my glossing then. One time I get to it, I'll try to post upward some pics.
I just fixed up a few PU/PE boards using quik boot epoxy a few weeks ago. One had a large pressure ding between the fins and a large ding on the mid rail with some slight discolouration.
But used some 4oz, as nothing needed filling with the ceramic bubbles. I retrieve the white bubbling would have been really noticeable so stayed abroad from using them.
Used lx grit to sand down to the weave and allow the epoxy to cardinal-in. Worked up to 400 to finish sand the final coat.
The epoxy blended in better than my by PE ding repairs. Tin can't really run across it at all. Mixing small quantities 2 to one is really piece of cake and in that location were three unlike temperature ranges on the bottle with the approx pot life.
You lot'll pretty sure come across a difference, but to fix the ding it'll piece of work.
I merely wanted to chinkle in here. If yous are fixing a ding on a polyester board, use polyester resin. Epoxy will exist very clear and await nice, merely wont give you lot shut to the strength of a poly on poly bond. If yous are actually fixed on using epoxy, do like the others said and Make Sure you lot sand down the identify you will patch as best as possible (don't leave any smooth spots). Hope that helps.
I just wanted to chinkle in here. If you lot are fixing a ding on a polyester lath, employ polyester resin. Epoxy will be very articulate and wait overnice, merely wont give you close to the force of a poly on poly bond.
Couple of quick questions: How practise you lot know this; and Why is it and then? Are you maxim Poly bonds chemically with cured / hardened poly? I enquire, because my understanding is that once resin is cured, the only bond the next coat gets is physical, non chemical. I have used epoxy / fiberglass to repair dings on a poly board, and it seems very strong. Then are you saying its gonna fall off later on awhile, or that poly / fiberglass is only stronger than epoxy / fiberglass?
Are you saying Poly bonds chemically with cured / hardened poly? I ask, considering my understanding is that once resin is cured, the only bond the adjacent coat gets is physical, not chemical.
As far as I know, you are right... Once resin is cured, be information technology poly or epoxy, you are talking about a mechanical bond but. It used to be thought that if you soften poly resin with acetone you'd get a chemical bail with a poly repair, but that is non and so with todays resins, which have better cantankerous linking, and few "open up" molecule ends to create that chemical bail you're afterward. Everything I've read about the mechanical bonding properties of epoxy say it's superior to poly when using information technology for repairs on poly laminates and coatings.
I suggest using the same resin for a repair as used to build the board because it helps make the repair disappear, not because it'south a better bail.
Well commencement of all, I know this from doing ding repair and getting bad results from epoxy on poly. (Wrong epoxy maybe?) In fact, one of our shapers had an old board laying around and decided to glass information technology with poly. He then used epoxy to set the glass-on fins (considering that's what was laying around).(Did he let the poly fully cure,or just harden?) First time out on the board 1 of the fins came make clean off on a difficult lesser turn. It didn't cleft on the base or annihilation, just the whole epoxy saturated fiberglass that was used to prepare the fin to the board came off...no chemic bail.(Why would you wait a chemical bond betwixt poly & epoxy?) Just to put legitimacy to this, he has done TONS of glass ons.
Beyond that story, the not so catchy saying goes "poly on epoxy okay, epoxy on poly not okay". I'k non saying you lot can do a poly hotcoat on an epoxy lamination (although people do this with slap-up results), but my point is that you shouldn't use epoxy to do ding repairs on poly(your joking right?) but you CAN use poly on epoxy AS LONG Every bit THERE IS NO EPS FOAM EXPOSED(cheers for clearing that upwards....I call up). Chances are it will be okay (its non like epoxy on poly is terribly bad), it only 'shouldn't be done'. With that said, I know the power of tending to use what is laying around. If it fails, just acquire from the fault!
Epoxy resin will not bond to uncured poly,and poly resin volition non bond to uncured epoxy.There is a difference between cured resin and just hardened resin.If your bro has done "tons" of glassons and then he should have known in that location would not be a chemic bond only mechanical.Sounds like the resin on the board was hard,not cured when the fins got glassed on with epoxy.And then it wouldn't matter what grit you prepped the surface area with.I have to telephone call B.Southward. o n your claims of not being able to fix a ding on a poly board using epoxy,I've washed plenty with bully results.
Friday, 2022-06-10 07:51
#11
I should have said that all the advice I take read is to utilise the same textile to ready dings as the original construction.
However, I have been banned from using polyester resin where I live, so information technology was epoxy ding repair or no ding repair.
I was very sceptical virtually using epoxy on PU/PE.
If you get whatever epoxy drops on a sealed shiny surface so it is unremarkably possible to go it off. When the boards were sanded with grade dust then the epoxy appears to have a very skillful bail and could but be sanded off. How it lasts over fourth dimension I don't know.
Surfboard epoxy is supposed to be more flexible and durable than polyester, and then it will in all probability concluding a long time.
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Can Epoxy Be Used To Repair A Visor,
Source: https://www.swaylocks.com/forum/45245/ding-repair-can-i-use-epoxy
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