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Hanaldo - 6/24/2018 10:59:27 PM

Were you trying to bond them to the ABS? ABS isn't an easy plastic to bond to, you would need to aggressively stand it with 60 or 80 grit to get any sort of bond. Even then, you would likely find you could pry them off quite easily if you tried.

Just a side note; 80% vacuum with no perforated release film is quite high, you will likely leave your laminate quite dry. You should add a layer of perforated release film after the peel ply, and consider dropping your vacuum level a bit if cosmetics are more critical than weight.

Were you trying to bond them to the ABS? ABS isn't an easy plastic to bond to, you would need to aggressively stand it with 60 or 80 grit to get any sort of bond. Even then, you would likely find you could pry them off quite easily if you tried.

Just a side note; 80% vacuum with no perforated release film is quite high, you will likely leave your laminate quite dry. You should add a layer of perforated release film after the peel ply, and consider dropping your vacuum level a bit if cosmetics are more critical than weight.

I bought a set of sample weaves (7 of them) of CF. I used fusion fix to stick them to a piece of ABS andlayered them up with XCR resin mixed 3:1 by weight. Over this I layed peel ply ( white with the black lines) a layer of breather cloth ( white fluffy stuff) and a layer of vacuum ply ( the pink stuff). Vacuumed it at 80% vacuum for about 2hours and then let it set overnight.

Tried to remove all the bagging material this morning and all the samples came off with the peel ply. It’s come off giving a very smooth finish to the CF which I’m going to put more resin on to see the finish.

Anybody know why.? Had I sanded the ABS too well (600 grit),? Does the resin not stick well to ABS ? Were the gods of composites against me. Please help.

Hanaldo.
No problems. Thanks for the info, I welcome any input. I hadn’t realised that the pro-finish had the antifray finish. As I write the printer is making some brackets for storing roles of fabrics off the floor.

The excitement of starting lay ups is rising.

Mick

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Hanaldo - 6/21/2018 2:00:12 AM

Yeh don't get me wrong, I wasnt necessarily recommending the ProFinish! I was just pointing out it was more likely that Jas meant that than pre-preg.

Personally, I don't actually like set-weave carbon. You can achieve virtually the exact same thing by misting a coat of spray adhesive over the back of regular carbon and letting it dry before using it. Or if you want a really stable material, use spray adhesive to stick two layers of regular material together. 

Yeh don't get me wrong, I wasnt necessarily recommending the ProFinish! I was just pointing out it was more likely that Jas meant that than pre-preg.

Personally, I don't actually like set-weave carbon. You can achieve virtually the exact same thing by misting a coat of spray adhesive over the back of regular carbon and letting it dry before using it. Or if you want a really stable material, use spray adhesive to stick two layers of regular material together. 

Hanaldo.
Hi. Yes that be an idea but the carbon/twaron is already on order. I’ve also seen some carbon finish stitched together to form a V. Anyway as I say, I’m a total novice on this subject and I think I’ve thrown myself in at the deep end, You soon learn with this method. I’ve also found a couple of small jobs as practice.
New materials and working methods are fun aren’t they.

Mick

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Hanaldo - 6/19/2018 2:42:33 PM

I think Jas may have actually meant the ProFinish carbon rather than pre-preg as he mentions using spray adhesive with it which would be totally unnecessary and even detrimental with pre-preg.

The ProFinish is a set weave carbon, which is a type of dry carbon fabric that has a binder in it to prevent the fibres from fraying as much and keeping the weave neat. It can be more accurately than regular dry carbon, so can be great for doing v-weaves in an infusion or wet lay setup.

Jas. I appreciate that pre-preg is the best way to go but I don’t have the facilities to use the stuff so I’m limited to working with infusion or vacuum bagging a wet layup. I think infusion is beyond my current skill and experience level, although I hope to be able to do it in the near future. Management ( the wife) likes the carbon/twaron the most as it has the gold highlights in it, so I’m going with that. As I’m pushing my personal envelope I’ll be laying down a 600 ish g/M with the 200 g/M on top with the tow stripe on top of that. I’ll flat that lot before applying the stickers as they will be better on a flat, smooth surface. If it means a couple of extra layers of clear resin I’m happy with that. In fact I’m looking forwards to working with an entirely new medium. If it was easy anybody could do it.

Pics.? Of course, if there are no pics, it didn’t happen.

Keep the comments coming, I need the help.