1973 196 rebuild question

[Duffy1470]

Glassed some on anchor locker. Will post when I get back from Thanksgiving.  Happy Thanksgiving everyone.

[Duffy1470]

Will glass it into bow this afternoon with at least 2 layers of 1708 on all joints maybe 3 in certain areas. Should be solid.

[Duffy1470]

Coring the anchor hanger with honeycomb. Put a layer of mat down,  wet it out, then the honeycomb, a finally some 1708. Have more to do but leaving some options open by not glossing the whole thing. Kind of waiting for inspiration in doing.

[Duffy1470]

Okay, a while back I started having lamination problems with the polyester resin I have been using. Most people seem to be using vinyl esters or epoxy so I thought I would share this info. The problem I was having was small sections of a fresh lamination would not cure, turn brown, basically bite rear end. The weather changed from hot summer conditions to cold winter conditions (above 80 f every day and night to below 60 f every day and night) and I did not adjust the amount of MEK catalyst enough. The poly, unlike epoxy, is more forgiving and actually needs fairly radical adjustments of MEK. For instance, when the temperatures were above 80 degrees I would use 10 or 11 CCs of catalyst per quart of resin and it worked perfectly. When the Temps dropped I added a cc or 2..... not enough!  The expert at advanced plastics instructed me to go to at least 15 CCs per quart maybe higher.  I will report on future outcomes soon.

[Duffy1470]

Here is a picture of the appropriately brown section of bad lamination.

[RickK]

Good info to share

[Duffy1470]

Getting there. Rigging tunes dried in but not done. Two more deck pieces cut and dry fitted.

[Duffy1470]

Will have to make bilge hatch I suppose.

[Ulysses485]

Duffy, you have hit some major milestone and are doing an incredible job! coming along way building molds and such! Way to go! I have learned to love poly but have to share my MEKP chart that I got back when i started in 2019 which reflects all the different temps etc. Its from a boat builder and has never let me down. There is in fact quite a difference between 60-80 in CCs of MEPK needed. My only fail has been with what i am almost certain to be glass that was damp that I didn't realize. You can see that in my 240 build. I have been working on the transom for my 222 flatback and 240 and glassed with success in 55 degree weather.

[Duffy1470]

Thanks for the kind words Ulysses and Please share the chart. Just checked out your 240 thread. Last post was July. Any updates? It's looking good.

[Ulysses485]

Here it is Duffy. I typically have it on my phone or a printed copy and always reference it throughout the layup. I even adjust as the cooler evening temps set in. Its not advised to work in anything lower than 60 but I have with good results. Typically, I make sure that the following day will have high temps above 65. I also don't like to leave the part out for potential dew to set on it. Its amazing how well a simple tarp covered/enclosed (all sides) carport will help protect the boat from dew onset from the evening cool/moist air. 

 The 240 & 222 flatback should get the transom core "glued in" soon. I have to update but typically like to with bigger changes and photos.

[Duffy1470]

Ulysses, thank you so much for the chart. That's huge.

[Duffy1470]

The collar will fit behind the bow combing pad. I will finish glossing it but it will never be seen again once installed.

[Duffy1470]

The collar on the back will fit behind the bow combing so it will never be seen

[Duffy1470]

Dry fitted anchor locker. I think to install this thing I'm going to have to:
1. Glass bottom part in totally with 2 strips, 4 and 6 inches, around all edges inside and out
2. Remove cap, partially at least,  to access the front
3. Put anchor hanger part on dry
4. Put cap back on to insure correct angle
5. Glass outside edge of vertical and horizontal to maintain proper angle (see pic with 2x4 and allthread)
6. Remove cap and glass inside of horizontal anchor hanger part and possibly glass in some knees braces

Any suggestions? What am I missing?