To grind or not to grind?!

[jthor3277]

Hello folks! It's hard to believe that I only have a few months left to finish this restore! Anyways, bought a a project '89 Ebbtide boat last spring and I am in the process of laying a new floor down. The floor and stringers was so bad that everything had to come out. I have finished the demo, the most pains taking part, and it's time for the repairs. My question is this. Would you recommend grinding off the old glass channels and residual on the floor and start a new or can I use them as guides for the new boards. It would save me a bunch of time but I only plan on doing this once. Would this mess with the structural strength, etc? Thanks!

 

[osborn159]

Re: To grind or not to grind?!

clean them out really good slide the new boards in and use whats there to bond to, if your verbal discription is accurate and the glass thats there is ok, save the time and additional$$$$ to lay in new
good luck
D

 

[jthor3277]

Re: To grind or not to grind?!

Yes my description is correct. I should post pics..I know! The glas is in great shape. I was going to epoxy resin the boards and glass them. I was going to lay the new boards in the track of the old ones and bond to the sides. They are in good shape. I wish I could have said that for the stringers! Thanks for your input.

 

[Yepblaze]

Re: To grind or not to grind?!

Use them, but degrease and skuff it up good with course abrasives so your new work can stick to it.

 

[pete44]

Re: To grind or not to grind?!

Wire brush and sandpaper works well for me..I left a "guide" like you are saying to lay new board down.Except in bow area where stringer was cut to shape bow curve. I marked the end of stringer there with a sharpie...My original stringer is 1/2"...I have been discussing with a couple other guys here and they are going to "sandwich" 2 of them to make a 1" stringer...I am in debate about that (more weight)..

Pete
87 SeaRay Seville 17' BR

 

[jonesg]

Re: To grind or not to grind?!

Wire brush and sandpaper works well for me..I left a "guide" like you are saying to lay new board down.Except in bow area where stringer was cut to shape bow curve. I marked the end of stringer there with a sharpie...My original stringer is 1/2"...I have been discussing with a couple other guys here and they are going to "sandwich" 2 of them to make a 1" stringer...I am in debate about that (more weight)..

Pete
87 SeaRay Seville 17' BR

Ditto here, it worked out very well leaving the glass stringer bases, I cut them down to 2 inches. Bedded with PL premium then a couple layers of poly and glass. Slap a coat of good bilgecoat paint on it and it looks very clean.
My stringers are 1/2inch ply, its plenty strong on a 20 footer.
Its only there to set the space fron hull to deck, the actual strength comes from the glass work between the hull and the vertical side of the stringer.
If that bond is good the stringer shouldn't see a lot of loading.
And a vertical plywood blade is very rigid. Its like the sheer web in an I beam.

 

[pete44]

Re: To grind or not to grind?!

My stringers are 1/2inch ply, its plenty strong on a 20 footer.
.

Which brings up another question....What about using 1X6 fascia board...It is pine..Is the 1/2" ply cut off a 4X8 ft. sheet to make the stringers or did you buy them already pre-cut?

Pete

 

[ezmobee]

Re: To grind or not to grind?!

Ply is about a zillion times stronger than pine dimensional this application.