to add to glassing problems

[tunnels]

Ok starting with just these 3 photos !
The first two are panels of ply fixed to a glass surface ! Neither have been coved !!
The first photo is not good as the glass has been pushed hard into the corner with one of those HORRIBLE steel laminating rollers that have a thread instead of fins !!pushing HARD into the sharp corner has squashed the resin out and as its hardened the fibres have sprung back and separated all way along !
first not coved in the corner !!
second glass pushed in to hard leaving a small sharp corner
third the resin squashed out and as its hardened has shrunk away with spring back as the fibre have separated and allowed air into the fibres !!


Ok next photo !
The plywood has never been wet out sufficiently and so the fibre along the edge ar not wet properly and not even touching the ply wood surface !
Again skimping on resin does not make a nice strong job !
Also again NO COVE in the corner .


Coving it really important ! the glass pushed into and had the resin squashed out is absolutely useless and has virtually no strength what so ever . COVE THE CORNER completely changes it !! the glass is able to go around the corner and STICK to the cove and with a proper radius is way way stronger because the glass isn't dry and will have more resin so no glass separation !


The last photos is a badly made mould and has distorted and pulled badly ! take a close look and see how much it has pulled out of shape all over !!
Caught in the right light with the reflection it not only looks bad it is bad !! BUT is not uncommon of OLD moulds that have had a lot of use and also spent time outside in the sun and been cooked !! That's a mould !the same scenario can happen to you boat as well and is one of the reasons cores are used to hold panels in shape . A good example of a bad example of parts not built properly !!

Just to keep the record straight these moulds were sent to China from an Australian company and had been stored outside un covered in the blistering sun in Queensland and the rain but with product made and left on the mould to protect got rain water in between the product and the mould also and cause big patch's of OSMSIS and blistering !!

[tunnels]

All these things you seeing are every day occurrence's in almost every glass shop any where you dare to tread !! just I carried a camera with me always all the time !



Photo 1 another collection of very common faults !! the big bubbles on the corners is caused by the edge of a woven fabric with big bundles of fibres cut right on the corner !! First this should never have happened ! who ever the laminator was should have cut the edge of the woven SHORT down away from the actual corner or LONG enough to come right up over and round the corner out onto the flat surface on top by at least 2 inches and then laid the csm glass over the ends of the fabric and held down the ends and wet out and rolled gently !!If you look closely in the big bubble you can see the ends of the roving strands inside the bubble
The next part of the same photo is the ever so common thing of pressing to hard into the corner and squashing the resin out and leaving very little resin behind !!.
As the resin shrinks so the fibres pull away and delaminate from each other leaving I long row of resin starved glass ! these effects can be seen in the next two photos
As well the fourth photo showing the dry glass along the corner also the ridge of resin rich glass where the laminator had pulled the resin out to !!
BAD TECHNIQUE !! never roll into the corner and pull out !! always roll GENTLY pushing resin INTO THE CORNER from both directions , this way there is lots resin in the corner and increases the size of the radius and makes the corner maybe twice or three times more ridged and stronger !!
THE photo below is just plain common bad rolling using those horrible steel threaded type roller's that seem to abound every where !! slowly I use to collect them and throw then into the big deep pond over the fence at the back of the factory!