oops!
Supreme Mariner
- Joined
- Oct 18, 2007
- Messages
- 12,932
i have many pm's and seen it on the forum lots about this question.....
i searched for a post i did a few years back about this..but our search engine...is ...well...still searching...:facepalm:
ok....to glass in colder temps you have to fool the area into thinking its hot.
this is done by warming the sub straight ......usually with a quartz halogen lamp or 10 of em for that fact.....
yes....get your tarps or tents over the boat....keep a heater in there and get it as warm as you can.......even at -20 a few quartz halogen will really heat up the surface.
the resin must also be warn.......so....it stays in the house where it is a nice comfy 70 deg....putting it in front of a nice glass door or window with the sun beating on it for a few hours will warm it up nicely.
the glass also has to be kept in a warm area.
after your prep is done.....and your ready to glass.....bring out your glass and cut it to size.....then leave it laying over your stringer or area with the lamps on it and the warm/hot sub-straight.
now....get everything ready as usual brushes...rollers..(yes...they need to be kept in the house nice and warm as well).........drink your coffee or other
pump your personal bilge and go over every step in your mind as per normal.
ready........set.........ok
pour your resin, and mix the MEKP....stay at 2% 2.1 or 2.2 but don't get crazy and go 2.7 or 3. you are just fine....and at 2.5 you will kick so fast you will be throwing out your pail of resin in minits....so stay at 2 %
once your resin is mixed.....RUN your resin out to the boat....pull up the glass laying off the sub-straight and start wet out as normal.....then just glass as normal.....just work faster than you would usually do.
as soon as your done the area....throw the lamps back on it and keep them on for over an hour or two......(at this stage....you do not want the heat....just the warm....try to keep it around 160 or 170 at the surface) (this is easily achieved with the quartz lamps).
the reason to keep the lamps on the area during and after cure.....is strength and stiffness will be increased with hotter temps as the resin is coming off the back end of the cure. (this is a process used in making your corian counter tops...yes...they are poly fibreglass resin !)
thats it........simple as pie.......just fool all the ingredients into thinking its hot out and keep the heat on it till long after its cured
hope that helps guys.....
cheers
oops
i searched for a post i did a few years back about this..but our search engine...is ...well...still searching...:facepalm:
ok....to glass in colder temps you have to fool the area into thinking its hot.
this is done by warming the sub straight ......usually with a quartz halogen lamp or 10 of em for that fact.....
yes....get your tarps or tents over the boat....keep a heater in there and get it as warm as you can.......even at -20 a few quartz halogen will really heat up the surface.
the resin must also be warn.......so....it stays in the house where it is a nice comfy 70 deg....putting it in front of a nice glass door or window with the sun beating on it for a few hours will warm it up nicely.
the glass also has to be kept in a warm area.
after your prep is done.....and your ready to glass.....bring out your glass and cut it to size.....then leave it laying over your stringer or area with the lamps on it and the warm/hot sub-straight.
now....get everything ready as usual brushes...rollers..(yes...they need to be kept in the house nice and warm as well).........drink your coffee or other
pump your personal bilge and go over every step in your mind as per normal.ready........set.........ok
pour your resin, and mix the MEKP....stay at 2% 2.1 or 2.2 but don't get crazy and go 2.7 or 3. you are just fine....and at 2.5 you will kick so fast you will be throwing out your pail of resin in minits....so stay at 2 %
once your resin is mixed.....RUN your resin out to the boat....pull up the glass laying off the sub-straight and start wet out as normal.....then just glass as normal.....just work faster than you would usually do.
as soon as your done the area....throw the lamps back on it and keep them on for over an hour or two......(at this stage....you do not want the heat....just the warm....try to keep it around 160 or 170 at the surface) (this is easily achieved with the quartz lamps).
the reason to keep the lamps on the area during and after cure.....is strength and stiffness will be increased with hotter temps as the resin is coming off the back end of the cure. (this is a process used in making your corian counter tops...yes...they are poly fibreglass resin !)
thats it........simple as pie.......just fool all the ingredients into thinking its hot out and keep the heat on it till long after its cured
hope that helps guys.....
cheers
oops