1967 IMP Aztec -- Resto Underway again Suggestions please

[rrumba]

Re: 1967 IMP Aztec -- Thoughts and suggestions for Rebuild maybe repower

Re: 1967 IMP Aztec -- Thoughts and suggestions for Rebuild maybe repower

that would be for a normal mix, but what about due to the higher temps, should it be a little less MEKP to give a slightly longer work time?
and last one, for sealing the plywood on all sides first, is 1% not enough MEKP so that the wood can absorb it and still cure?

that should be it for now. i will be bolting it up here a just a little bit to dry fit it that way and see, then all the plywood gets sealed later this evening when the temps go down some.

 

[oops!]

Re: 1967 IMP Aztec -- Thoughts and suggestions for Rebuild maybe repower

Re: 1967 IMP Aztec -- Thoughts and suggestions for Rebuild maybe repower

just try and measure as close as possible with the dry fit and then do the build up, then the CSM on the transom and once both tack mate them together.

YES.....DRY FIT AND MEASURE.....THEN GLASS AND INSTALL......DONT LET ANYTHING CURE BEFORE YOU INSTALL

Once i have the transom in place and bolted, i should wait about 4 hours before removing the clamps? then i can start the stringer installs? I kind of like the idea of a faster set time using the PB for filleting and not using the PL at all for it so I do not have to wait the 24 hours before moving onto the stringer install.

once the clamps are off i can start the PB install around the transom or can i do it at the same time?

once the clamps are on.....you can do the pb.....removal of the clamps will not change anything...the clamps are there just to pressure fit the transom to the skin.

you can even move directly to stringer install if the clamps are not in the way.

when i do this in the shop...i do it all at once.....transom first....then stringers.....everything is cut and dry fit first....then i install everything and glass it at once....i just make sure i dont glass too much in the same spot .....i dont want the resin to get too hot and bake. once the heat has gone out of a resin cure...it is safe to glass over that area.

 

[oops!]

Re: 1967 IMP Aztec -- Thoughts and suggestions for Rebuild maybe repower

Re: 1967 IMP Aztec -- Thoughts and suggestions for Rebuild maybe repower

that would be for a normal mix, but what about due to the higher temps, should it be a little less MEKP to give a slightly longer work time?
and last one, for sealing the plywood on all sides first, is 1% not enough MEKP so that the wood can absorb it and still cure?

the lowest MEKP ratio you should use is 1.7 %.....so we are talking drops here. strength suffers below 1.5.

though it been tested with certain resins that strength is maxed at .07%......this is under lab conditions....at .06% there was considerable falloff of strength of the polymer chain.
so to play that close to the boarder. is not advisable unless you are working in perfect conditions....temps...humidity...measuring equipment.....ect.

 

[rrumba]

Re: 1967 IMP Aztec -- Thoughts and suggestions for Rebuild maybe repower

Re: 1967 IMP Aztec -- Thoughts and suggestions for Rebuild maybe repower

excellent.........

 

[oops!]

Re: 1967 IMP Aztec -- Thoughts and suggestions for Rebuild maybe repower

Re: 1967 IMP Aztec -- Thoughts and suggestions for Rebuild maybe repower

so the mix ratio is 2% by volume then, and it is based on the resin and not the resin and wax combined, but just the resin. Same would be true for the PB mix then as well, however much resin i have in the pot, say 100ml, it will be 2ml of MEKP, after i have added the chopped fiber strands and cabosil

thanks again

2% of the resin alone.........when making peanut butter....mix the mekp first...then add the filler....you want to cat the resin.....not the filler....

 

[rrumba]

Re: 1967 IMP Aztec -- Thoughts and suggestions for Rebuild maybe repower

Re: 1967 IMP Aztec -- Thoughts and suggestions for Rebuild maybe repower

ahhhh, gotcha.....

 

[rrumba]

Re: 1967 IMP Aztec -- Thoughts and suggestions for Rebuild maybe repower

Re: 1967 IMP Aztec -- Thoughts and suggestions for Rebuild maybe repower

So had a severe slow down. Had to travel for work, bad weather, then got a severy upper respiratory infection which finally started to go away last week and leave me the weekend to try and get back on track to actually working on the boat, AGAIN.

I was able to get the transom middle sections coated with resin witha about 20 mins of work time that allowed a nice soak in. Then in between the 3 sheets of plywood on the second coat was applied with 1.5oz CSM between each section. The it was placed on the garage floor with plastic under it and on top then a piece of plywood placed on top then my bike on top of it with some batteries. Hopefully the 800+ pounds wil be enough weight to really help it bond.

I was able to get the front part of the stringer cut and test fit them. still need to do some trimming and final shaping of the front half but wanted to wait unitl i had the front and rear sections joined together the finish the shaping. I used PB to glue them together, thought it would be stronger than the PL would be. The first one i did mad a slight error and instead of scarfing the opposites sides on it i did both sides, carp, so i had to come up with another way to joint them together without wastign the wood. Well that did not work out so well. it cracked right past the joint. Good to find out before it was in. see the pics below, and a question/suggestions about the new repair now needed for best result.....

now the pics:


stringers cut

test fit

Scarf joint

Transom 1st coat

did not get any of the rest of the transom going together due to resin on the hands and not enough hands

 

[rrumba]

Re: 1967 IMP Aztec -- Thoughts and suggestions for Rebuild maybe repower

Re: 1967 IMP Aztec -- Thoughts and suggestions for Rebuild maybe repower

Under the bike is the transom waiting and curing and hopefully bonding and mingling togther nicely.



More of the stringers being joined together to make a 14ft long stringer. there are 2 sections for each stringer one 1/2 inch and one 3/4 inch will be glued together tomorrow with some CSM inbetween them to make up a 1-1/4" wide stringer then i will round over the edges with the router to make the wrapping easier.

PB added inbetween the joints

weight added

after 4 hours of setup

NOW the mistake

Used another piece to secure them

And here is where it broke on me

So now i am conflicted whith how to repair it. do i cut another front piece making it longer than the original splice and redoing the splice, or since i am going to have the 2 pieces 1/2" and 3/4" pieces, glued to gether to one long stringer can i just put it in place and then secure it to the 3/4" piece and that they will be strong enough like that?

Any other suggestions or thoughts??

tomorrow the transom goes in, gets clamped into place, PB installed around the edges, repair made to the one stringer, the stringers coated and then glued together so they can setup for tuesday to be installed since i am now slightly off from installing them tomorrow night with having to repair the one stringer.


ALL suggestions welcomed for the stringer repair........

Thanks guys.

 

[rrumba]

Re: 1967 IMP Aztec -- Back on again

Re: 1967 IMP Aztec -- Back on again

ok, so Murphy showed up some time last night as the transom was setting up.................

I thought i had put the screws back in place to prevent any sliding when i put the weigth on the transom, GUESS what i did not do.....

now guess what happened........

remember to prevent this from happening with your own projects guys, it can become a very costly mistake.....



Removed the plastic and found this

tried to see if there was any way to salvage it, but of course there is not. Now today i have to recut, shape, fit, retest, shape and then hopefully glass again as well.

This time i was thinking of a different approach and could use some, NO do not do it that way, or YES that will work, or NO DO IT JUST LIKE BEFORE suggestions , guidance, steering.....

yes, i did try to split it apart in hopes that i might be able to, but that is not an option. it is a big paperweight now. maybe i can use it in the tinny.

 

[rrumba]

Re: 1967 IMP Aztec -- Back on again

Re: 1967 IMP Aztec -- Back on again

alright, so back on track..........I hope...


New transom cut out again

.


Shaped, rounded the edge over with the router

test fitted again, holes drilled and mounted now sitting inside and waiting for the glassing together tomorrow

On a different note, trying to pour out 500ml from a 5 gal bucket is very challenging. So i was able to pickupone of these at the Azone

it fits and works like a charm. for dispensing the MEKP since it is in a quart container i went to Kroger and pickd up the syringes they give out for childrens medicine,the 10ml size and use that with a normal drinking straw taped on the end and cut to fit the depth of the bottle. Using OOPS method, metric, makes it very easy to dispense 2% by volume, 2ml of MEKP per 100ml of resin


Now i just have to address the isssue of the striger that broke on me. I think i am going to just glass it to the 3/4" stringer and use a few screws to hold it in place since they are more for a core and floor support then they are for strength. i think this should work and keep the strength for it as well.

Does anyone else have any suggestions or does that sound like it will work?

 

[rrumba]

Re: 1967 IMP Aztec -- Resto Underway again Suggestions please

well didn't get to glass the transom yesterday as i wanted, hopefully today and hopefully i can get it in the boat as well.


Anyone have any answers to my other questions???? Pretty Please................

 

[Woodonglass]

Re: 1967 IMP Aztec -- Resto Underway again Suggestions please

Now i just have to address the isssue of the striger that broke on me. I think i am going to just glass it to the 3/4" stringer and use a few screws to hold it in place since they are more for a core and floor support then they are for strength. i think this should work and keep the strength for it as well.


I guess I missed this one. What Broken Stringer? Where? I thought you were replacing ALL the wood in your boat. I'm confused.

 

[rrumba]

Re: 1967 IMP Aztec -- Resto Underway again Suggestions please

yep, replaced it all. it is the new stringer that i cut out for the replacement. i made a scarf joint and when i turned it on it's side it cracked on me. it's in the pictures above. i am using a 1/2" piece of plywood and a 3/4" piece, both will be glued together somehow. just might use PL premium to stick them together and hopefully set up by tomorrow so i can glass them in, other wise i will probably use resin and some 1.5oz scraps to run down the middle of them and glass them together. leaning more towards the glass as it will setup faster and i will not have to wait as long as i woiuld have to with the PL.

I just found out that next week i will have to travel again so i am trying to get as much of it done this week/weekend, hopefully even the floor will be in.

 

[rrumba]

Re: 1967 IMP Aztec -- Resto Underway again Suggestions please

hey WOG, it is post #88

 

[Woodonglass]

Re: 1967 IMP Aztec -- Resto Underway again Suggestions please

Ok, I gotcha now. It's called 'sistering" when you place two pieces on opposites sides of a joint to tie it all together. Won't hurt a thing. I'd make the sister two feet long and go for it. I agree with using the resin and scraps OR you could go to lowes and buy some gorilla glue. 100% waterproof, strong as steel, and a little goes a long way. You can go to work instantly since you will be screwing it all together.

 

[rrumba]

Re: 1967 IMP Aztec -- Resto Underway again Suggestions please

i happen to have a bottle of gorrilla glue here at the house, might not be big enough though. It is the one that you dampened the area to ge glued and then it foams/bublles up and almost expands it seems like, but does hold together something fierce. Didn't think of using that...... that may help to speed up the process as well and allow me to get them bedded, filleted in tonight as well as the transom and PB in the transom....

how long should i wait after using the gorrilla glue and screws to act as my clamps, before i can finish the final shape on it and install? by final shape i mean i have to cut an angle on it for the hull side, use the router to round over the edges and do a little bit more to the bow piece before i am completely happy with the way it sits in there.

thanks WOG

 

[rrumba]

Re: 1967 IMP Aztec -- Resto Underway again Suggestions please

i like your end table and shaker style table that you made. Gave me some good ideas on what i can do with the pallets that are on clist waiting for someone to come pick them up...... did you have a set of plans you made them from, or did you have it all in your head? Finding a good set of plans on line is not as easy as you would think, but then again i am looking for free versions especially a toy box one for my son.

sorry a little off topic

 

[Woodonglass]

Re: 1967 IMP Aztec -- Resto Underway again Suggestions please

Send me a PM with your Email Address and I'll send you some good Woodworking stuff.

 

[rrumba]

Re: 1967 IMP Aztec -- Resto Underway again Suggestions please

for the stringers i am using a 3/4" and 1/2" for the entire length of the stringer making it 1-1/4" thick by 14ft long. so there may have been some confusion there, or i may be confused. when i join the 2 boards together for the stringers to make it my overengineered thickness, i can still use the GG but will just need more. the knee part is about 8" tall the rest is abotu 6" tall at the highest point. so the broken piece in the picture, 1/2" plywood, i was just going to glue and screw the 2 pieces together the entire length and since it is not necessarily completely structual but core i should be ok in doing this, right?

 

[Woodonglass]

Re: 1967 IMP Aztec -- Resto Underway again Suggestions please

You'll be fine doing that.