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dilligaf76
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Okay so some will know I'm new to Vacuum Bagging and I want to, I think I'm right in saying a Wet Layup. I'm planning to coat my Pre Waxed polished mould with Resin, lay some Carbon Fibre, stipple it with a brush, might lay some Glass Fibre on top of it, stipple it some more with resin and then I'll be ready for the next steps.
Is this the right things to do next, lay Peel Ply, then Perforated Release Film, then, Bleeder Ply and finally the bagging itself with a pressure of -5 to -8 HG until it cures, does this all sound right?
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Steve Broad
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+xOkay so some will know I'm new to Vacuum Bagging and I want to, I think I'm right in saying a Wet Layup. I'm planning to coat my Pre Waxed polished mould with Resin, lay some Carbon Fibre, stipple it with a brush, might lay some Glass Fibre on top of it, stipple it some more with resin and then I'll be ready for the next steps. Is this the right things to do next, lay Peel Ply, then Perforated Release Film, then, Bleeder Ply and finally the bagging itself with a pressure of -5 to -8 HG until it cures, does this all sound right? First off, which resin are you planning to use? I ask because epoxy resin doesn't work with standard chopped strand fibreglass.
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dilligaf76
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In using EL2 Resin and I meant to say the second layer would be the woven cloth sort.
I used the same Resin for my mould and that was mostly chopped strand which seem to work okay.
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Steve Broad
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+xIn using EL2 Resin and I meant to say the second layer would be the woven cloth sort. I used the same Resin for my mould and that was mostly chopped strand which seem to work okay. CSM fibreglass is usually held together with an emulsion binder, which isn't broken down by epoxy resin. You will probably get away with using the very light emulsion bound CSM (100gsm) but you will have difficulty laminating with heavier mats. With epoxy you should use a CSM using a powder binder. If you use the woven cloth fibreglass this has no binders so works with all resins.
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dilligaf76
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Oh right I didn’t know that Steve, interesting indeed. Okay so what can you tell me about the order of the things I need after I stipple the layers of cloth with Resin?
By the way I appreciate your time and knowledge...
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Steve Broad
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+xOh right I didn’t know that Steve, interesting indeed. Okay so what can you tell me about the order of the things I need after I stipple the layers of cloth with Resin?By the way I appreciate your time and knowledge... I'm just a home car project bunny, you need the likes of Oekmont and Hanaldo to give you expert guidance. However, here is how I do it :-) First off, I would never mix fibreglass and carbon an anything that is subject to stresses due to their very different stretch/deformation properties. This is how i used to do it. Once you have laid up your material (making sure that the carbon is fully saturated) cover with a peel ply, then a perforated release film (making sure that there is plenty of spare material in the corners) then a couple of layers of breather cloth. Place in the vacuum bag and slowly remove the air whilst pushing the bag into all the corners. Once you are happy that there are no bridging issues, leave to cure. I went for the best vacuum my pump could provide, but others on here would recommend only going to 50% vacuum and they are more experienced than me (but I still disagree with them :-) ).
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dilligaf76
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Well you still seem to know your stuff and the knowledge you do have is more than mine that’s for sure.
It’s interesting on how other people do theses things and great what I can take away from it. You’ve still been a big help to me and the only one so far on this post so thanks again Steve for all your input...
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Chris Rogers
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I have a bunch of laminate sample videos and some use this bagged wet layup method - you can see the whole process though the bagging is not the focus. I agree with what Steve says - but the vacuum level depends on the situation. If you aren't using core, full vacuum will probably be fine but less would be better if you have only two plies. And you will probably use too much resin at first - but better too much than too little! Here are two videos that might be useful: https://youtu.be/cDZ4GBIjcp4https://youtu.be/06-0Vxs_9nY
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dilligaf76
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Group: Forum Members
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+xI have a bunch of laminate sample videos and some use this bagged wet layup method - you can see the whole process though the bagging is not the focus. I agree with what Steve says - but the vacuum level depends on the situation. If you aren't using core, full vacuum will probably be fine but less would be better if you have only two plies. And you will probably use too much resin at first - but better too much than too little! Here are two videos that might be useful: https://youtu.be/cDZ4GBIjcp4https://youtu.be/06-0Vxs_9nY Hi Chris and thanks for that. I watched your video clips and found it all very interesting, looks like you know what your doing as well. More information to soak up and only adds to my knowledge.
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Steve Broad
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+xI have a bunch of laminate sample videos and some use this bagged wet layup method - you can see the whole process though the bagging is not the focus. I agree with what Steve says - but the vacuum level depends on the situation. If you aren't using core, full vacuum will probably be fine but less would be better if you have only two plies. And you will probably use too much resin at first - but better too much than too little! Here are two videos that might be useful: https://youtu.be/cDZ4GBIjcp4https://youtu.be/06-0Vxs_9nY The discussion regarding vacuum levels is interesting as I have always striven for the best vacuum I can achieve as I am looking for minimum weight on my project car. I did not encounter any issues and the panels came out pretty light with a close to ideal carbon:resin ratio for wet lay. However, I can see the argument for not running a full vacuum in some situations. Having moved on to prepreg there is no discussion regarding levels of vacuum :-)
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