Reconstructing seats
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Boat Maintenance
Forum Discription: Discuss maintenance of your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=24231
Printed Date: November-19-2024 at 6:18am
Topic: Reconstructing seats
Posted By: lakedog55
Subject: Reconstructing seats
Date Posted: November-28-2011 at 2:23pm
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Hi. It has been a little bit since my last post. I have a little miss at 3/4 to full throtle, but plan on rebuilding carb and thinking about switching back to points. And checking the timing, all and all not to bad, for first run after stringer reconstruction. Anyway starting on the seats. I was wondering what an alternative to using wood in the seats would be and which thickness I should go with? Is there a difference in strenth that I need to make up for switching from 1/2 wood to composite. ------------- Lakedog55 |
Replies:
Posted By: SNobsessed
Date Posted: November-28-2011 at 8:05pm
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Mike - I also need to reconstruct a seat base. I am just going to use exterior ply, & treat it with home brew CPES. I think a plastic material would be cost prohibitive. ------------- “Beer is proof that God loves us and wants us to be happy.” Ben Franklin |
Posted By: Swatkinz
Date Posted: November-28-2011 at 9:20pm
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I went the exterior ply route when replacing my center seat bottom for the rear seat in my boat last winter. Affordable, easy and effective. ------------- Steve 2011 Sport/Air 200 Excalibur 343 2017 Boatmate Tandem Axle Trailer Former CC owner (77, 80, 95, 88, all SNs) Former Malibu owner (07, 09) |
Posted By: lakedog55
Date Posted: November-28-2011 at 9:53pm
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Thanks
GTO airboats has some 3/8 polymer sheets, I am going to take a look but the 3/8 seems a little week. Mike ------------- Lakedog55 |
Posted By: Swatkinz
Date Posted: November-28-2011 at 10:20pm
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Mike,
I don't think anyone really addressed your question of material thickness. I replaced with as close to the exact match of the original as possible. With 3 women in the house, I don't want the seat bases to last forever. Kinda gives me something to do when they start talking about shopping. In my mind, that kind of repair is not difficult or time consuming enough to worry about choosing the "right" material or having it last 20 years or so. JMO ------------- Steve 2011 Sport/Air 200 Excalibur 343 2017 Boatmate Tandem Axle Trailer Former CC owner (77, 80, 95, 88, all SNs) Former Malibu owner (07, 09) |
Posted By: TRBenj
Date Posted: November-29-2011 at 10:48am
Gotta disagree there... my Skier has the original vinyl (40 years old) and hope to get similar life out of my other interiors. Skins are expensive! If I can find a suitable seat base material that matches or exceeds that lifespan, you bet Im going to use it. Ive yet to hear someone come up with a good recommendation... but Im all ears. ------------- |
Swatkinz wrote:Posted By: Swatkinz
Date Posted: November-29-2011 at 11:08am
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I should clarify. I only replaced the plywood on my seats. I reused the original skin and foam. My only real expense was time. I too want the vinyl to last. I guess my point was that I don't mind, in fact I enjoy, a small boat task from time to time that gets me out of the house.
The idea of the material to use in lieu of plywood could perhaps be overthought. JMO ------------- Steve 2011 Sport/Air 200 Excalibur 343 2017 Boatmate Tandem Axle Trailer Former CC owner (77, 80, 95, 88, all SNs) Former Malibu owner (07, 09) |
Posted By: TRBenj
Date Posted: November-29-2011 at 11:16am
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Pulling apart the interior and re-stapling the skins makes me nervous- especially on a $2500+ delux interior. Ive redone a few basic-shaped pieces and its certainly not rocket science, but getting some pieces to fit properly on their bases is an art. If you mess up, youve got a misshapen cushion, or a misaligned stripe- and of course, youre putting new holes in the vinyl every time you re-staple.
I dont mind a project, but I hate re-doing the same one twice... I just assume the bases last as least as long as the vinyl! I wouldnt mind spending a few extra bucks on a superior material, if someone could identify one. But thats just me! ------------- |
Posted By: lakedog55
Date Posted: November-29-2011 at 11:25pm
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HI,
A local guy who does factory work for a couple of boat companies uses a plastic material 1/2" thick for a 100 a sheet kinda of pricey but 1/2 pt is 40. Have not seen the material; yet or got an exact name of it going to haul my boat over and get a price for interior and new foam. Mike. Will post pic of material and name when available ------------- Lakedog55 |
Posted By: ChristinesMarine
Date Posted: December-04-2011 at 12:53am
| The plastic material is probably expanded PVC which is what C.C. uses. It has several brand names, Sintra being the brand C.C. uses. The problem with expanded PVC is that it will only give a little before it will crack, usually from a mounting or drain/air hole to another. This is a very common problem on observer seat bottoms from stepping on to them from a dock close to the front edge. Many coaming pads and walk thru walls are actually cracked when the boat is assembled due to over-tightening. The good news is that it can be easily repaired using heavy duty, clear PVC cement that is used on PVC pipe. |
Posted By: ChristinesMarine
Date Posted: December-04-2011 at 12:56am
| Do not use the expanded PVC board on standard style interiors with the aluminum frames as the span is too large between supports an it will crack. |
Posted By: ChristinesMarine
Date Posted: December-04-2011 at 1:04am
| P.T. Plywood is a good choice, however, it comes in different grades and the grade Home Depot, Lowe's, etc. sells is the cheapest available and usually has many hollow spots making it prone to separation. Check local lumber or specialty lumber yards for a better grade. |
Posted By: 8122pbrainard
Date Posted: December-04-2011 at 11:50am
What APA grade do you use? ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: ChristinesMarine
Date Posted: December-04-2011 at 2:35pm
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APA grades actually refer to the veneer on each side, not the inner layers. I was fortunate to have an engineer that worked for APA as a friend and he hooked me up with a local supplier for better, meaning less voids, P.T. Plywood. I bought several sheets but it has been so long, I don't remember the grade designations.
I should probably clarify that my suggestion to use P.T. Plywood was only in reference to an inexpensive alternative to a plastic material for SEATS. The theory being that it would last as long as the vinyl skins would last. The reality is that P.T.plywood is interior grade plywood that has been pressure treated and should NEVER be used in the actual structure in a boat. Marine plywood is the way to go on seats if expanded PVC is not practical and you want it to last for probably longer than you will own the boat. |
Posted By: 8122pbrainard
Date Posted: December-04-2011 at 5:04pm
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I'm curious as to your recommendation on the use of "marine" grade ply for seats. I don't feel we are talking about seats being a real structural issue. The only difference between marine and exterior is the allowed voids in the inner veneers. The big problem is the cost of marine. The glues are the same. Marine will rot the same as exterior and the reason we always recommend a CPES and epoxy treatment on exterior. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: ChristinesMarine
Date Posted: December-04-2011 at 5:33pm
| I said "if expanded PVC is not practical and you want it to last probably longer than you will own the boat" to use marine plywood. I, personally, would use P.T. Plywood as it will likely last 15 or more years which is longer than I will be boating ! The glue is not the same in marine and exterior plywood. Exterior plywood uses water resistant glue and marine plywood has waterproof glue. |
Posted By: ChristinesMarine
Date Posted: December-04-2011 at 5:42pm
| Marine plywood is usually made with harder woods than exterior grade plywood. You can immerse marine plywood in water and it will not, bubble, warp or de-laminate. Try that with exterior grade and see what happens ! |
Posted By: 8122pbrainard
Date Posted: December-04-2011 at 5:57pm
I'm sorry but do you have any proof on the glue? ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: ChristinesMarine
Date Posted: December-04-2011 at 7:35pm
| WOW....no proof, just 30 plus years of experience replacing interiors in hundreds of boats for a living....never mind !!! |
Posted By: MIskier
Date Posted: December-04-2011 at 8:36pm
Pete likes to do that to new members regardless of what their qualifications may be. ------------- 2006 MasterCraft PS 190 1986 CC Ski Nautique 2001 |
Posted By: lakedog55
Date Posted: December-04-2011 at 8:42pm
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Hi,
What a discussion over seat bases. Thanks for all the info, I was wondering if anyone has a pattern for the seats, I have the pro style in an 86 SN. The old interior had trees growing out of the seats. I think I have a pic. Thanks Mike ------------- Lakedog55 |
Posted By: SNobsessed
Date Posted: December-04-2011 at 9:40pm
Pete - no reason to be sorry, this is a really important question. We have talked about this difference hundreds of times. If people are making value based judgements on bad information, we need to clear the air (i.e. this goes way beyond seat bases). I will send an email to a plywood company to see if I can get any data. ------------- “Beer is proof that God loves us and wants us to be happy.” Ben Franklin |
Posted By: 8122pbrainard
Date Posted: December-04-2011 at 10:01pm
Sorry George but I think you took my question the wrong way. You are an upholsterer and very well respected. I'm a woodworker/boat restorer/ACBS member for way past your 30 years and have a good understanding on wood and wood boats. I truly feel that your glue ideas are outdated and is the reason I asked the question. Yes, at one time the glues were different but now feel that all mills producing ply will not take the time to change out their glue system to make ether interior or exterior ply. It's all a resorical base glue. BTW, I would NEVER use PT ply for a seat base. The stuff is low grade and PT treated to pass it off as a "good" ply!!  ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: Gary S
Date Posted: December-04-2011 at 10:08pm
How about using the wood from them and using a good glue to make your own plywood ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1711&sort=&pagenum=1&yrstart=1966&yrend=1970" rel="nofollow - 69 Mustang HM SS 95 Nautique Super Sport |
Posted By: lakedog55
Date Posted: December-04-2011 at 11:11pm
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Yeah thats what I am talking about it. I could use the glue from left over parts of Mr. Ed. Now to the real question does anyone have a pattern?. I am sure I can make them my way, but I want it to look like it did when it was built in 1986. I just dont have enough wood left to get good measurements. Looking at it I am not sure there is a straight part in the seats.
Thanks Mike ------------- Lakedog55 |
Posted By: ChristinesMarine
Date Posted: December-05-2011 at 2:47am
| Pete, you win. Now, lakedog55, to answer your original question...it depends on what year and model seats,what part of the seats,etc. You are making as to whether you need to increase the thickness when using a composite material to replace the original plywood. Having built and/or replaced many C.C. Seat foundations and bases, including building the "holy grail" 2001 deluxe stern seat from scratch, the answer is not a simple one. I would be happy to explain the details with you. Email me if you are interested or call me. NautiqueSkins@aol.com or toll free at 1-866-589-5614 |
Posted By: shuaigefu
Date Posted: March-31-2012 at 6:21am
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I should clarify. I only replaced the plywood on my seats. I reused the original skin and foam. My only real expense was time. I too want the vinyl to last. I guess my point was that I don't mind, in fact I enjoy, a small boat task from time to time that gets me out of the house. ------------- http://www.onlywonderful.com/" rel="nofollow - Bridesmaid Dresses | http://www.dressale.com/wedding-dresses-sheathcolumn-wedding-dresses-c-2_3_23.html" rel="nofollow - Sheath Wedding Dresses |
Posted By: juniorwoody
Date Posted: March-31-2012 at 12:16pm
| http://www.woodweb.com/knowledge_base/Marine_Plywood_Versus_Interior_Plywood.html" rel="nofollow - Link |
Posted By: 8122pbrainard
Date Posted: March-31-2012 at 2:13pm
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Jack, You link isn't working so http://www.woodweb.com/knowledge_base/Marine_Plywood_Versus_Interior_Plywood.html" rel="nofollow - here's one that does The second comment is correct and the first is incorrect. What are you looking at marine ply for? ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: juniorwoody
Date Posted: March-31-2012 at 2:26pm
Thanks for the help on that link Pete, I'll get it yet. Just trying to get clarification not looking for marine ply. Heck I have 20 sheets sitting here for the boat I intend to build someday. |
Posted By: Nautiquehunter
Date Posted: March-31-2012 at 3:50pm
| I was just at the lumber yard and they recommended MDO plywood it is used for making exterior signs . Their plywood supplier said it would hold up like Marine ply. It was 20.00 less per sheet for 3/4 . |
Posted By: 8122pbrainard
Date Posted: March-31-2012 at 4:13pm
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I have used the stuff which is commonly called "sign board". I made a disc for my daughter years ago and it's still in good shape - of coarse I did do the epoxy treatment to it! MDO stands for Medium Density Overlay which is the outside "skin". ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: juniorwoody
Date Posted: March-31-2012 at 5:07pm
The MDO is mighty fine stuff. Have used it many times and it holds up outside very well. It comes in oversize sheets also which can be helpful at times. Think about it, outdoor signage takes a real beating. Don't remember voids ever being an issue either. |
Posted By: juniorwoody
Date Posted: March-31-2012 at 5:07pm
The MDO is mighty fine stuff. Have used it many times and it holds up outside very well. It comes in oversize sheets also which can be helpful at times. Think about it, outdoor signage takes a real beating. Don't remember voids ever being an issue either. |