Hi guys,
Not been here for a while, i’ve been buisy working on other projects but now im hopefully back on the composites.
I was thinking of a new part today and was wondering if it was possible to do using resin infusion. The part would have an overhand when moulding, i was wondering if using a bit of spray tack would it be possible to use a set up similar to that in the picture below, or would gravity be a problem with the overhang? Imagine it as a cross section of the mould.
Thanks
Thats no problem and will work. Hope you thought about demoulding. If you have a split mould be sure that it tight.
Thats great news, thanks 
I just wanted to be sure before i purchased the part to take the mould from. Im in the UK and its going to cost me around $220 from the US, plus our import tax.
As you say id have to use a split mould. 2 parts should do it, its only a solo seat cowl for my motorbike.
If you infuse with a split mould you can choose three bagging ways.
1: seal the split and work with single bag
2: envelope the complete mould
3: seal the split and seal the first bag on the mould lip, than double bag by envelope the whole mould
I would choose way three, it is the safest way and no resin can get on the backside of the mould.
Or design your mould that the split is inside the bagging
Iv never looking into envelope bagging before, does that mean placing the mould actually inside a bag and drawing the air out?
What advantages does this give in addition to just sealing the bag around the lip of the mould?
Thanks
If you just perimeter seal the bagging film the parting planes between a multi-piece mold need a perfect airtight seal.
Yep
The advantage are…
Easier to seal.
Less pleats.
Does not require a large flange.
The disadvantage of enveloping is that resin can flow to the backside of the mould because you will most have some small bridging on the backside. And that
means that resin can travel to the backside after infusion and that may cause pinholes.