1808 Biax Conformabilty

[berry79]

I was just curious to how 1808 biax conforms to corners and angles. here is were I am at now.

It consist of a layer of 1 1/2oz csm and a layer of 24oz woven roven. I would like to put a layer of 1808 on top of this up to were I outline with the red line. Do you think there will be any problem doing that with the 1808? Another question, were I circled in red there seem to be a some what dry spot in the woven. Can this be fixed by roughing up the area and brushing on some poly? Thanks for any help.

 

[redfury]

Re: 1808 Biax Conformabilty

You should be able to get it to conform to the inside corner pretty well if you got the roven to do it. The air bubble you got can be ground and filled. Why are you putting so much glass on the transom before you put wood in? Seems excessive.

 

[berry79]

Re: 1808 Biax Conformabilty

You should be able to get it to conform to the inside corner pretty well if you got the roven to do it. The air bubble you got can be ground and filled. Why are you putting so much glass on the transom before you put wood in? Seems excessive.

Thanks redfury, just wanted to make sure before i did the lay up since it will be my first time with the 1808.

When I removed the old transom there was a lot of delamination I had to grind down. So this is just built back up to what was there from factory and a layer of 1808 will be just for that little extra.

 

[berry79]

Re: 1808 Biax Conformabilty

Is this OK? This morning I rough up up the roven I laid down Saturday and wiped it down with acetone. I then proceeded to lay up a layer of 3/4oz mat before putting down the biax 1808 to help smooth down the bold pattern of the woven. When I was finished laying down the mat you could see the pattern of the roven as illistrated in this pictures. Is this normal, or did I screw something up?

 

[Mark42]

Re: 1808 Biax Conformabilty

That looks great! 3/4 oz mat is rather light. It just disappears when soaked in resin.

I used 1708 on my hard top project. Making tight inside corners was not a problem. Just remember to keep going over the corners with the putty knife to push it in while spreading resin cause it walks out of the corners easy. Especially when it starts to kick, give it a once over in all the corners.

 

[berry79]

Re: 1808 Biax Conformabilty

That looks great! 3/4 oz mat is rather light. It just disappears when soaked in resin.

I used 1708 on my hard top project. Making tight inside corners was not a problem. Just remember to keep going over the corners with the putty knife to push it in while spreading resin cause it walks out of the corners easy. Especially when it starts to kick, give it a once over in all the corners.

Thanks Mark42, so you see no problem with the woven looking like that under the mat? I assume its just from sanding it that it show like that underneth.

 

[berry79]

Re: 1808 Biax Conformabilty

anyone help, just want to know that the woven showing threw like that is ok. I would like to lay up the 1808 tonight. want to make sure there is no problem with previous layers before I do so. Thanks.

 

[Mark42]

Re: 1808 Biax Conformabilty

That roven is so heavy, that the 3/4oz mat is not heavy enough to hide the weave. I'm not surprised that the roving "telegraphed" through the mat.

 

[berry79]

Re: 1808 Biax Conformabilty

Yeah I figured that it would telegraph through. I'm just worried about the pattern of the roven showing as light grey compared to the brown of everything else. I'm assuming it's just from the sanding, but I'm very new to fiberglassing and don't know much about things to look for.

 

[berry79]

Re: 1808 Biax Conformabilty

Sorry for all the questions, but I'm new to fiberglassing and learned basically from reading this forum. So here is my concern. Today I finally layed up the 1808 on my transom skin. Everything went perfect, it conforms really well to the contours of the boat. The concern I have are these 2 spots which you can see in the pictures. These are not bubbles, they seem to be areas that would not soak in the resin. I tried everything to get them out. Squeegy, bubble buster roller, I even pulled the 1808 pack and loaded up resin on the back side of the mat it self, then placed it back down. Nothing would change the way these spots looked. Even before I started I rolled resin out before placing the 1808 down. Is this even something to worry about? I tend to be some what anal about things and maybe I'm just over inspecting everything. Thanks for the feedback from everyone.

Before Wet Out

After Wet Out

First Spot

Second Spot

 

[berry79]

Re: 1808 Biax Conformabilty

Help

 

[fishseeker]

Re: 1808 Biax Conformabilty

Looks like you sweated on the glass. Have had spots like the cause I sweat very badly.

 

[berry79]

Re: 1808 Biax Conformabilty

Thats probably it. I was wearing the blue nitrite gloves and the sweat just drips out of them. Is this a cause for concern, or can I just keep going forward and not even worry about it?

 

[redfury]

Re: 1808 Biax Conformabilty

I wouldn't worry to much about that. Pretty minor imperfection really.

 

[berry79]

Re: 1808 Biax Conformabilty

I wouldn't worry to much about that. Pretty minor imperfection really.

Thats what I was hoping for. I've spent alot of time sanding and grinding on the transom outer skin and I'm ready to move on to fitting the transom and getting that in place. I'd didn't want another step backwards in having to repair this issue. Thanks redfury, this forum has been very helpful

 

[Mark42]

Re: 1808 Biax Conformabilty

I agree with the others, that is minor and doesn't look like it poses any issues to your transom.

Great work, you sure are meticulous! Its going to be rock solid. Those biax fabrics are incredible.

 

[oops!]

Re: 1808 Biax Conformabilty

yep....yer doin fine.....good glassing job really.

just make sure........matt allways goes next to a new surface or cloth....

the stitched part of the glass fabric must never ever touch anything except a chopped strand product. it is fine as a top layer....but if you are putting transom wood on....you MUST place chopped strand between the stitched and the wood.

the fabric pattern is normal.....you should never get a smooth surface from stitiched fabric.....if you do....you are using way too much resin.

i hope i didnt confuse you.

cheers
oops

 

[berry79]

Re: 1808 Biax Conformabilty

Thanks for the help guys. I know you guys here are very experienced, and Oops don't worry you didn't confuse me, awsome job on your project by the way. I've learned alot from your thread. So next week I will get started on fitting the transom. I have to take a few days off to take care of my son who just got pneumonia.