Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 29-12-2017, 13:02   #1
Registered User

Join Date: Apr 2017
Location: Boston
Boat: Boston Whaler, Conquest 315, 31ft
Posts: 212
Ok to cut into/off fiberglass benches?

I am looking at buying a 33' boat new that comes with 2 beds in a midcabin berth. The problem is that I do not want the beds, but they are actually molded into the fiberglass.

In other words the beds are fiberglass boxes molded as part of the interior shell and just have matresses on top of them. They have no storage compartments or anything, they are just platforms. The dealer says there is nothing inside the bed platforms, just empty space.

I don't want the beds. I would rather have the space for storage, or maybe a desk.

Can I just get a sawzall or rotozip and cut the platforms off and fill the space as I see fit, or will there be issues with doing that?
jsc7 is offline   Reply With Quote
Old 29-12-2017, 13:17   #2
Registered User

Join Date: Sep 2014
Location: Fiji Airways/ Lake Ontario
Boat: Legend 37.5, 1968 Alcort Sunfish, Avon 310
Posts: 2,749
Images: 11
Re: Ok to cut into/off fiberglass benches?

What is the boat?
Tetepare is offline   Reply With Quote
Old 29-12-2017, 13:53   #3
Registered User
 
Sailmonkey's Avatar

Join Date: Sep 2009
Location: Houston
Boat: ‘01 Catana 401
Posts: 9,626
Re: Ok to cut into/off fiberglass benches?

Easy answer is, No problem, that type of stuff is just a liner.

Hard answer, It depends. What is the boat and how is the hull/liner constructed? Are the boxes structural in any sort of hull stiffening way?
Sailmonkey is offline   Reply With Quote
Old 29-12-2017, 14:04   #4
Registered User

Join Date: May 2017
Location: Maine USA
Boat: Gulfstar 41' ketch
Posts: 203
Re: Ok to cut into/off fiberglass benches?

A sailboat hull fresh out of the mold is amazingly flexible adding the interior gives considerable strength and rigidity. If the liner is attached to the hull at all I would say it is structural and modifications should be approached with great caution.
sailor_ed is offline   Reply With Quote
Old 29-12-2017, 14:21   #5
Registered User
 
Uncle Bob's Avatar

Join Date: May 2010
Location: Sydney Australia
Boat: Fisher pilothouse sloop 32'
Posts: 3,428
Re: Ok to cut into/off fiberglass benches?

Quote:
Originally Posted by sailor_ed View Post
A sailboat hull fresh out of the mold is amazingly flexible adding the interior gives considerable strength and rigidity. If the liner is attached to the hull at all I would say it is structural and modifications should be approached with great caution.
+1
__________________
Rob aka Uncle Bob Sydney Australia.

Life is 10% the cards you are dealt, 90% how you play em
Uncle Bob is offline   Reply With Quote
Old 29-12-2017, 14:27   #6
Writing Full-Time Since 2014
 
thinwater's Avatar

Join Date: Nov 2008
Location: Deale, MD
Boat: PDQ Altair, 32/34
Posts: 9,618
Re: Ok to cut into/off fiberglass benches?

If the liner provides some structural support, and it may, the simple solution is to create a ring that replaces the lost strength and is well bonded that to the inside lip. The ring will contain about the same amount of material as what you removed. Variations on this (reinforcing plates) are common practice on refinery equipment and large oil tanks. Adding bulkheads inside can also help.

The bottom line, however, is that you must understand the structure or have your plans reviewed by someone who does. I have seen serious problems result from weakening a liner with holes.

Remember that you need at least one berth that can be used underway. That isn't a V berth.
__________________
Gear Testing--Engineering--Sailing
https://sail-delmarva.blogspot.com/
thinwater is offline   Reply With Quote
Old 29-12-2017, 14:40   #7
Registered User

Join Date: Apr 2005
Location: Southern California
Boat: Catalina 320
Posts: 1,326
Re: Ok to cut into/off fiberglass benches?

Issues ? Taking a sawzall to a new boat ? You should wait until the warranty expires maybe.
Calif.Ted is offline   Reply With Quote
Old 29-12-2017, 15:13   #8
Registered User

Join Date: Oct 2015
Posts: 2,007
Re: Ok to cut into/off fiberglass benches?

Quote:
Originally Posted by Calif.Ted View Post
Issues ? Taking a sawzall to a new boat ? You should wait until the warranty expires maybe.
Geez, I have to admit I missed the part about this being a purchase of NEW boat...

Maybe you should just buy a different boat with a cabin layout more suited to what you want? And who builds a sailboat with inaccessible empty space?
billknny is offline   Reply With Quote
Old 29-12-2017, 15:42   #9
Registered User

Join Date: Dec 2010
Location: W Carib
Boat: Wildcat 35, Hobie 33
Posts: 13,486
Re: Ok to cut into/off fiberglass benches?

How new? New like waiting for build? If so, maybe builder will modify for you. That would be the cleanest solution and you get their structural input too.
belizesailor is offline   Reply With Quote
Old 29-12-2017, 15:47   #10
Registered User

Join Date: Apr 2017
Location: Boston
Boat: Boston Whaler, Conquest 315, 31ft
Posts: 212
Re: Ok to cut into/off fiberglass benches?

Quote:
Originally Posted by belizesailor View Post
How new? New like waiting for build? If so, maybe builder will modify for you. That would be the cleanest solution and you get their structural input too.
I asked them about this but the dealer just said it would be "expensive" because it would require them to change their mold. These are guys who charge $1000 for cupholders and stuff like that so expensive means EXPENSIVE.
jsc7 is offline   Reply With Quote
Old 29-12-2017, 15:52   #11
Registered User
 
Sailmonkey's Avatar

Join Date: Sep 2009
Location: Houston
Boat: ‘01 Catana 401
Posts: 9,626
Re: Ok to cut into/off fiberglass benches?

Quote:
Originally Posted by jsc7 View Post
I asked them about this but the dealer just said it would be "expensive" because it would require them to change their mold. These are guys who charge $1000 for cupholders and stuff like that so expensive means EXPENSIVE.


That sounds more like the dealer is t interested in asking the builder....,I would contact the builder directly.
Sailmonkey is offline   Reply With Quote
Old 29-12-2017, 15:53   #12
Registered User

Join Date: Dec 2010
Location: W Carib
Boat: Wildcat 35, Hobie 33
Posts: 13,486
Re: Ok to cut into/off fiberglass benches?

Quote:
Originally Posted by jsc7 View Post
I asked them about this but the dealer just said it would be "expensive" because it would require them to change their mold. These are guys who charge $1000 for cupholders and stuff like that so expensive means EXPENSIVE.
Oh well, it would be the ideal solution, but at a price. Maybe sail it somewhere that rates are low and modify it there.

Hopefully the builder would at least answer some related questions for you...after all you are dropping some bucks with them.
belizesailor is offline   Reply With Quote
Old 29-12-2017, 17:37   #13
Registered User

Join Date: Oct 2015
Posts: 2,007
Re: Ok to cut into/off fiberglass benches?

This is about the same as saying, "I am buying a new SUV, but I really want a pickup truck, Can I just cut the back off?"

About the only good reason for paying the premium a brand new boat brings is so you can have it customized to exactly what you want. The only answer that makes sense here is find the boat you really want.
billknny is offline   Reply With Quote
Old 29-12-2017, 17:56   #14
Registered User
 
senormechanico's Avatar

Join Date: Aug 2003
Boat: Dragonfly 1000 trimaran
Posts: 7,163
Re: Ok to cut into/off fiberglass benches?

Talk to the builder.
If you can't get in contact, or get the runaround, find another boat !
You are the boss here. They need YOUR money.
Don't get pushed around by BS from the dealer.
__________________
The question is not, "Who will let me?"
The question is,"Who is going to stop me?"


Ayn Rand
senormechanico is offline   Reply With Quote
Old 30-12-2017, 09:11   #15
Registered User
 
seasick's Avatar

Join Date: Sep 2007
Location: Bend, OR
Boat: Brewer designed Pacific 43 in fiberglass. Center cockpit set up for long-distance single handing.
Posts: 472
Re: Ok to cut into/off fiberglass benches?

I see no reason at all why you can not / should not cut an access hole into this molded bunk. I would be more concerned about having a boat with any inaccessible spaces lest you hole the hull etc. Besides being a waste of precious space.

Two considerations: (1) I would frame any hole you plan to cut out in order to land a cover on or consider an off the shelf flush hatch. (2) If bilge water has any means of sloshing into this area when heeling, consider either waterproofing the space or making your holes large enough for watertight containers.

Note: a Saws-all is not your best option.
seasick is offline   Reply With Quote
Reply

Tags
enc, fiberglass


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
How to cut fiberglass in a straight line jbinbi Construction, Maintenance & Refit 42 22-11-2016 04:10
10 inch circle cut in fiberglass deck - how to fix?? SecondBase Construction, Maintenance & Refit 9 22-08-2013 23:19
Did AP Classes cut into your kids summer of boating? Free Agent Families, Kids and Pets Afloat 65 28-04-2012 07:45
To Cut or Not to Cut - Underseat Cabinets Jetexas Monohull Sailboats 9 25-02-2012 19:06
Installing Cut-Off Switch on Tohatsu FraidNot Auxiliary Equipment & Dinghy 3 25-06-2010 18:47

Advertise Here


All times are GMT -7. The time now is 14:17.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.