Fiberglassing without a bag 101

[southshorelocal]

How much stronger does a layer of fiber glass add to a board?

[silospen]

How much stronger does a layer of fiber glass add to a board?

Well, that all depends on the fiberglass. There's a lot of different types and weights out there.


@DK:

Thanks for the input. I've never used Poly resin myself, but people seem to really hate it around here. The rollers are a good idea, my father uses some metal rollers for glass, but I had trouble getting hold of them. I think Bombsies already suggested that the wood didn't need to be wetted out. I'm still skeptical , it's just really easy to do a layer on the wood since it's a flat and uniform surface. I can't see any negative points against doing it, are there any?

As for your suggestions on mix, I honestly have no idea what a quart or a CC is in real numbers (we don't use these regularly in day to day UK measuring). My west system epoxy calls for a 5 to 1 mix of resin:catalyst, which (if google calc is right), is nothing like 1 quart to 5 cc's. So perhaps just following the label on the resin is the best approach.

[Dkofnrc]

There isn't any negative point to wetting the wood. When I'm working on a part that has a lot of curves. bumps ect. it's nice to apply a little resin on the part so the matt will stick and wont fall down. As for the resin mix the 1 quart to 5 cc's is what I would use if I was doing a part the requires a lot of time and rolling. How ever I just switched jobs and now I mix the resin 1 quart to around 10 cc's. It comes down to how fast you are haha. But yeah if you think sticking to the label is your best bet then stick to that.

I personally think cloth is harder to work with cause all the fiber are going in a certain direction. Un like mat where they are random, they take shape to just about any thing. Carbon is pretty easy to work with but since it's black it's very easy to leave dry spots and bubbles with out noticing. Now since most board designs are basically flat with slight concave laying any composite is fairly easy.

DK

[z92s]

So i am using Fiber glass resin and liquid hardner, i have just straight up epoxy in a tube.

heres my question .

Should i mix the epoxy in with the resin and liquid hardener?

and

if i was too put a fiberglass between the two plys how would it stick?(i also have a buttload of gorilla glue..)

[southshorelocal]

Well, that all depends on the fiberglass. There's a lot of different types and weights out there.

Ok how much strength would triaxel fiberglass add

[Dkofnrc]

Ok how much strength would triaxel fiberglass add

I would go for this not triaxle
Fiberglass Cloth

The 8.9oz satin Weave

It's hard to give a strait forward answer to that question. There are a lot of factors like the wood, glass oz. weave, how many layers of glass that determine that answer.
Hope that helps.
DK

[Dkofnrc]

So i am using Fiber glass resin and liquid hardner, i have just straight up epoxy in a tube.

heres my question .

Should i mix the epoxy in with the resin and liquid hardener?

and

if i was too put a fiberglass between the two plys how would it stick?(i also have a buttload of gorilla glue..)

No leave the expoxy and gorilla glue out. Don't try to mix any thing like that in with resin you will just end up with a nasty mess. Also mixing chemicals like that could cause some harmful fumes to release.

A layer of glass inbetween ply will just bend. In order to get strength you have to do the opposite sandwhich a piece of ply wood inbetween two or more layers of glass. Same thing goes for carbon.
DK

[z92s]

thanks Dk, thanks you guys, this really helped!

[Kindah]

Three quick ones =)

1) Can I fiberglas the whole thing, after i pressed the rektangulare ply's, before i cut out the form of the board from the ply's?

2) Still dont get the whole thing about "the green time" Cant i just wait till it dried up?

3) Did i spell everything right?

EDIT: Ok, i can see now how the first question kindah makes the second one unecesary, hehe. So the first Q is the important one!
EDIT 2: I really need to put fiberglas on fully painted board, and the thing about epoxy is that i actully sink into the wood. What can i do? And will the image on the board shine trough completly?

Thanks!

[z92s]

Three quick ones =)

1) Can I fiberglas the whole thing, after i pressed the rektangulare ply's, before i cut out the form of the board from the ply's?

2) Still dont get the whole thing about "the green time" Cant i just wait till it dried up?

3) Did i spell everything right?

EDIT: Ok, i can see now how the first question kindah makes the second one unecesary, hehe. So the first Q is the important one!

Thanks!

alright,

Awnsers..

1) Yes you can infact i did that and it is a great and plus you dont have to worry about sanding the extra resin that hangs off the board becuase you cut it off.

2) well, some you can see the some weird greenish transparent cover on it for awhile(correct me if i am wrong) but im sure its rare..

3)you spelled rectangular wrong. GET FIREFOX yo.

++++++++++++++++++++&&&&&&&&&&&&


BTW I finished my fiberglass board i will load some pics(but since i am a noob should i load it up on this post?)

[Kindah]

alright,

Awnsers..

1) Yes you can infact i did that and it is a great and plus you dont have to worry about sanding the extra resin that hangs off the board becuase you cut it off.

2) well, some you can see the some weird greenish transparent cover on it for awhile(correct me if i am wrong) but im sure its rare..

3)you spelled rectangular wrong. GET FIREFOX yo.

++++++++++++++++++++&&&&&&&&&&&&


BTW I finished my fiberglass board i will load some pics(but since i am a noob should i load it up on this post?)

Sweet! Yeah put up some pictures!

And i made a couple of edits, do you mind?

[z92s]

EDIT 2: I really need to put fiberglas on fully painted board, and the thing about epoxy is that i actully sink into the wood. What can i do? And will the image on the board shine trough completly?

Thanks!

i am not about the epoxy sink in the board question but the image on the board might be slightly darker, a tiny bit of yellowish orange-ish tint. kind of.

[Kindah]

i am not about the epoxy sink in the board question but the image on the board might be slightly darker, a tiny bit of yellowish orange-ish tint. kind of.

Gotcha!

I will just have to talk my friend into it i guess, i'll just tell her you said it would be fine

And of course i'll write a post here for you all to read.

Now where's the pictures on your board?

[Kindah]

Gotcha!

I will just have to talk my friend into it i guess, i'll just tell her you said it would be fine

And of course i'll write a post here for you all to read.

Now where's the pictures on your board?

Well, didnt seem to work that good, now you know.

[skimmer]

If I might add a couple of notes.

5. Depending on how fast you want resin to cure for 1 quart of resin 5cc's of cataylist.

DK

the resin:hardner ratio should be exactly 2:1 (in amount not weight) a little either way wont hurt
because its a chemical reaction ADDING MORE HARDNER WILL NOT SPEED IT UP it only means it never set properly
think of it this way: two resin molecules join to one hardner molecule so if theres too much hardner thay have nothing to join to.
always do the ratio as 2:1 resin to hardner

[silospen]

the resin:hardner ratio should be exactly 2:1 (in amount not weight) a little either way wont hurt
because its a chemical reaction ADDING MORE HARDNER WILL NOT SPEED IT UP it only means it never set properly
think of it this way: two resin molecules join to one hardner molecule so if theres too much hardner thay have nothing to join to.
always do the ratio as 2:1 resin to hardner

Uh, West systems is 5:1.

Advice: Read the back of the bottle and do what it says.

[.secrets]

excellent tutorial! i am now not as weary about using fiberglass! appreciate it!

[Dkofnrc]

the resin:hardner ratio should be exactly 2:1 (in amount not weight) a little either way wont hurt
because its a chemical reaction ADDING MORE HARDNER WILL NOT SPEED IT UP it only means it never set properly
think of it this way: two resin molecules join to one hardner molecule so if theres too much hardner thay have nothing to join to.
always do the ratio as 2:1 resin to hardner

Do you work with it for a profession? Have you ever tried putting 60cc in less than a cup of resin before? It will kick off in a matter of min. What is the deffenition of Catalyst by the way?
DK

[BigDaddy101]

sweet! thanks for the help but i wanted to do carbon fiber, what do need for that?

[silospen]

sweet! thanks for the help but i wanted to do carbon fiber, what do need for that?

I have no experience with CF whatsoever, but from what I understand, working with lightweight carbon is very similar to working with fiberglass. Have a search around and something'll pop up.