Drill holes before or after assembly?

[Chill-FAN]

i could be wrong but i think what johnptc is trying to say is ... if you put the glass in first with silicone and then cover your tank and the edges of your glass with resin that becuase your glass will move due to water pressure thus also the silicone is flexibale an will move a little butttttt....your fiberglass resin is not that elastic and would not move with your glass and rhather crack.... i could be wrong here but imo the resin would crack..

if it sounds confusing i will try and explain it better??

hope this helps

awesome project by the way!!

 

[portabuddy]

lol i said that the otherday in his other thread..

i havent built one myself(yet), but most(mostly all) plywood tanks have the glass installed from the inside and after the tank has been watreprofed and the silicone used as a gasket, but im sure you read all the same articls and builds so i dont hahe to tell you that...

if you install the glass the pour the resin after, you run a risk of cracking the glass as the resin gets quite hot when curing and the glass wouldnt expand at the same rate, resin one set has almose no give and when the wood expands and contracts it will more the ressin too and this over a bit of till well form leaks whre the glass and resin meet, which is why people use silicone, its flexable and alows or that give that you need.