Fiberglass epoxy question RV-9A slider

[bret]

Originally Posted by ron sterba

Thanks Larry, thanks,my thoughts were running a little amuck about green. How many layers shouldI install? I bought rolls of 1", 1 1/2" & 2" of fiberglass with a hem sewn in on both edges. With one layer down and sanded ( need new thumb and forefinger). My next layer I wanted carbon fiber. Are there any special cutting procedures on this material. Mines in a roll one foot wide by 5 foot long and the strands are 3/32" wide and all going in same direction and a simple thread going 90 degrees across.( up & under & over ) it does not look like the weave of fiberglass cloth mating. Did I buy the wrong carbon fiber material? I am assuming the carbon fiber strands should run length wish across the windshield edge,yes/ no?

I at a rest stop on the interstate so I haven't been able to check the links the guys have sent in their threads. Maybe these questions might be in them,so forgive me for not checking them. Been a crazy busy day here in Oregon with the humidity getting up near 30% today.

Ron in Oregon RV9A

I bought a roll of CF, strands going the wrong way too, I just cut 3" lengths and laid them carefully the correct direction, me being a rookie at this FG stuff, came out great....and strong!

[lr172]

Originally Posted by ron sterba

Thanks Larry, thanks,my thoughts were running a little amuck about green. How many layers shouldI install? I bought rolls of 1", 1 1/2" & 2" of fiberglass with a hem sewn in on both edges. With one layer down and sanded ( need new thumb and forefinger). My next layer I wanted carbon fiber. Are there any special cutting procedures on this material. Mines in a roll one foot wide by 5 foot long and the strands are 3/32" wide and all going in same direction and a simple thread going 90 degrees across.( up & under & over ) it does not look like the weave of fiberglass cloth mating. Did I buy the wrong carbon fiber material? I am assuming the carbon fiber strands should run length wish across the windshield edge,yes/ no?

I at a rest stop on the interstate so I haven't been able to check the links the guys have sent in their threads. Maybe these questions might be in them,so forgive me for not checking them. Been a crazy busy day here in Oregon with the humidity getting up near 30% today.

Ron in Oregon RV9A

I don't have a slider, so don't know your application. For my Targa strip, I used three or four strips of glass, but it was a lightweight glass.

I am from Chicago, and would kill for a day with only 30% humidity

Larry

[ron sterba]

Well guys after driving for 4 hrs two in heavy traffic I got the right carbon fiber. After work last night I laid the carbon fiber strips and put peel ply over it. Yep it's 2:41 am Friday and just finished at 2 am. Well I tried laying the CF strips down to coat them with resin but they pulled apart at the edges so I wetted the layer from last night (sanded of course) with resin and then laid the CF into my brushed on resin ,then I tabbed up and down with a resin laiden 1" brush to coat throughly and then applied the peel ply material. Friday afternoon I check it. This procedure is really a art. Good night or morning.

Ron in Oregon RV9A

[DanH]

Whenever possible, avoid multiple layup sessions, and brushed resin application.

If tape (not always a good choice), cut all planned plies to length and stack them on a sheet of 4 mil plastic. Saturate with resin; just pour it on, then cover it with another plastic sheet. Give it a bit of time to soak while you work the resin around with a squeegee or roller. When it's all saturated, work all the excess resin out to the sides, away from the layup. Trim offf all the excess plastic, in particular the section of plastic/resin/plastic sandwich and throw it in the trash. You're left with a properly saturated stack of glass plies. Peel the plastic off one side, pick it up, flip it over, and place the stack on the work as desired. Now peel the remaining plastic, and stipple the air out from under the plies.

If using cloth, cut the plies a little larger than the finished part, stack 'em, wet 'em, cover, and saturate. Now draw the desired shape of the layup right on the plastic cover sheet. Trim to shape, cutting the entire sandwich, peel and place as before.

[spark68]

Van's has some pretty good video instruction in the Rv-14 area of their web site showing fiberglass layup on the windscreen. May be helpful to you.

http://vansaircraft.com/public/service-rv14.htm

[ron sterba]

Dan, Mark, used both processes today and then used peel ply. I really liked the peel ply because it held my piece of CF and resin from sliding down the sides. When I pulled the peel ply off the resin surface was pretty level. I did find peel ply nice in that I was able to smooth the layer without pulling the CF out of position. Dan I'll try multiple pieces with resin poured over. Last night I had a mixture flash quickly with smoke and extremely heat. Yeah just set in on the ground away from everything and mixed one pump each. Flash batch was 3 pumps each of 105 and 205 west system. It warns on the 105 label. So I was aware of the condition but didn't expect. You learn. Temp was 82 in hangar. Today was near a 101. I think I need to use my 206 hardner. Again very pleased with results. I'll sand and place four more layers of 2 each. Sandwich in is good. I'll keep you updated.

Cheers
Ron in Oregon. Learned a lot in all the threads. Thanks guys.

[DanH]

Originally Posted by ron sterba

Temp was 82 in hangar. Today was near a 101. I think I need to use my 206 hardner.

Way too hot for laminating with 205.

[Mike S]

Originally Posted by ron sterba

------- and then used peel ply----------


--------------I'll sand and place four more layers of 2 each----------

Cheers
Ron in Oregon. Learned a lot in all the threads. Thanks guys.

There is no need to sand if you used peel ply-------that is one of the benefits of using it.

Go re-read the link I put up earlier, or here is another one from a different source. http://forum.woodenboat.com/showthre...63728-Peel-Ply

[deek]

Originally Posted by DanH

Whenever possible, avoid multiple layup sessions, and brushed resin application.

If tape (not always a good choice), cut all planned plies to length and stack them on a sheet of 4 mil plastic. Saturate with resin; just pour it on, then cover it with another plastic sheet. Give it a bit of time to soak while you work the resin around with a squeegee or roller. When it's all saturated, work all the excess resin out to the sides, away from the layup. Trim offf all the excess plastic, in particular the section of plastic/resin/plastic sandwich and throw it in the trash. You're left with a properly saturated stack of glass plies. Peel the plastic off one side, pick it up, flip it over, and place the stack on the work as desired. Now peel the remaining plastic, and stipple the air out from under the plies.

If using cloth, cut the plies a little larger than the finished part, stack 'em, wet 'em, cover, and saturate. Now draw the desired shape of the layup right on the plastic cover sheet. Trim to shape, cutting the entire sandwich, peel and place as before.

Dan's advice is 100% spot on. I learned the sage procedures above from 35 years of composite aircraft building. Read every one of Dan's words - twice.

Peel ply **only** when you have to - it's a crutch on non-bagged wet lay-ups.

[ron sterba]

Well guys I am getting this,,finally,last night's glass went in piece saturated as Dan mentioned and you'll backing up Dan. Dan that website is educational and works well here.peel ply ,wow nice finish. Sides stayed in place,that was nice. Did have a couple of pockets with no resin under the peel ply. Is this because the resin ran??? Should I just sand these shinning holes and put a leveling layer of resin and 403 micro fiber? Then proceed with the next layer of Carbon Fiber? It appears the wrap over is getting pretty smooth.

Another note. Check this app. Freeflightradar24. All words run together.
You'll ADSB locations right in your phone. That's the limited free version but I think I paid $4 for the app that tells it all about the plane,speed altitude.where,going to,eta, and 3D of Google Earth of the pilot sees. You can even see your buddy get a Bourne and head toward your airport.bunch more stuff.

Ron in Oregon