boat stuck in mould

All I know is that I've seen finish problems like print thru from trying to build too light. You probably wouldn't want your boat built like a solid CSM shower tub because it soaks up more resin and has less strength per lb with the fibers going in every direction. The other finish problem I've seen is chalking. I haven't seen many shower tubs get sun exposure like a boat either. I don't see what's better about a shower tub finish than a quality boat's finish. Maybe you could post some pics.

 

Your are a lttle behind .
Chalking is the type of gelcoat used . . It uv rays from the sun are the cause !!
Whole boats up to 40 feet long used to be just chopped strand glass and yes weight was never a issue . just put bigger motors !! fuel was cheap and no one really gave it a second thought .
Glass is not much use without resin and resin alone is not much use without glass so there isnt a lot of choice .

 

Send me a bag of cash and I'll go out and buy a new boat and catch up tomorrow

 

How bigger bag of cash you looking at ??
Big !
Bigger than big
or really big ??

 

Tunnels, your not due back till wednesday...................

http://www.agrosalmon.com/images/photos_med/bathtub-hull-mold-ready-1013.jpg

 

He's not really here...that's just a figment of our imagination.

MM

 

Mold finish is only one of the factors in the surface profile of the part, resin plays a big roll in the finish too.

Depending on the type of resin there may be very little, or a great deal of print through. VE, Ortho and ISO resins shrink a fair amount, DCPD shrinks much less, this is one reason why most resins are now Blended with DCPD.

Tubs and showers use a filled DCPD with a very short gel time that can yeild a great finish.

 

ok enough about bath tubs??

heres some more pictures

before the polish



after a good polish using 200 and 500 compound



some gelcoat



and my first layer of glass gone in today.



as you can see my shed is pretty small, where the picture was taken is the door of the shed, pretty small but it dose me grand for now!

 

Looks good. Let's hope it comes out easier this time.

 

Fingers crossed. weather is good for tomorrow. SO the release should be in the evening all going well

 

The heater i see in the back ground once it had gelled and glassed and was hard you could stand the mould on its tail with the front up the wall, and set the heater to blow warm air into it for a 30 minutes or so!! It will do wonders and really speed up the cure and set it hard and when all has cooled it could have released its self so be carefull when you lower the mould back down the boat could want to fall out . If waxed and pva it should fall out by warming the hull and the mould they will retain the warmth for another 30 minutes of more before they are cold . so you have a hour for the sake of 30 minute using the heater!!.
Ok question s. what was your temprtaure ?/ what was your humidity ?. what was you gel time for the gel coat ?and what ratio did you use ?? what was the resin catalyst ration ?? what was you gel time ?? and the temprature when glassing ?? all those things should have found a place in your head and or you should have them written down . to refer back to !! each day is differant from the last !!. time of day makes a differance !!!. get used to knowing these things and at a glance if theres a sudden change in the conditions you can instantly compensate for it

 

Something of interest maybe !!!

A couple of differeant types of woven one with chopped strand onthe back and just plain good old everyday run of the mill woven roving !! interestint th see the flatness of the differant weaves , a edge of 0/90 ! another of double bias and one bundle of glass fibres from the woven wet out with resin on one end and it traveled over 25 mm along its length capillary action , and not forgetting a cup or catalysed resin and lots a bubbles !!
So that fill a few hours this morning while doing other things as well of course !

 

if i pour water into the mold to get the release will it desolve the pva there fore making it useless for a release. or can i go ahead and pour water into it for a good release

 

Ok question s. what was your temprtaure ?/ what was your humidity ?. what was you gel time for the gel coat ?and what ratio did you use ?? what was the resin catalyst ration ?? what was you gel time ?? and the temprature when glassing ?? all those things should have found a place in your head and or you should have them written down . to refer back to !! each day is differant from the last !!. time of day makes a differance !!!. get used to knowing these things and at a glance if theres a sudden change in the conditions you can instantly compensate for it[/QUOTE]

temp was a constant 20 degrees which brought the humidity down to 50%
cure time for the gel coat in the just was 35min,
for the first layer of gel coat 15mil for every litre, and 20mil the second skin of gel coat. glass time was the same. ive it written with a perminent marker on the shed wall.

 

ok so hows progress ? like i mentioned that heater when you finished and the glass is hard ,warm the boat and the mould just for a short time even 30 minutes !!, it does wonders for the curing and when its cooled out the boat should fall out of the mould if all is well .
You have a whole bunch of followers that are waiting to hear the results of you next boat !!
Its 4;00 am local time and i been awake wondering and hoping !