spheretex core material

Please see our tutorials and FAQ before posting.
fallguy1000
Very Active Poster
Very Active Poster
Posts: 3582
Joined: Tue Jan 12, 2010 12:25 am

Re: spheretex core material

Post by fallguy1000 » Mon Sep 09, 2019 7:47 pm

nel.edgar wrote:
Mon Sep 09, 2019 1:57 pm
so.... i searched in the syte of spheretex and they have there a lot of information and also a exemple of use in transoms that u can download... :roll:

as anyone used it as a alternative to wood in transms??
I used corelite 26-28#.

The density of the material is key.

A low density material will crush and mechanically fatigue and drlaminate all but the thickest glass.


My boat build is here -------->

viewtopic.php?f=12&t=62495

fallguy1000
Very Active Poster
Very Active Poster
Posts: 3582
Joined: Tue Jan 12, 2010 12:25 am

Re: spheretex core material

Post by fallguy1000 » Mon Sep 09, 2019 7:55 pm

https://www.spheretex.com/en/product-de ... ansoms.pdf

This is a real pain in the ass way to build a transom.

For my work, I laminated to 20mm pieces of corelite together under lite vac.

Then we built up 4 layers of 1708 on each side, or say about 10mm.

So, we have a 50mm transom.

The spheretex method requires all the intermediate glasswork which is fine, but much more work.
My boat build is here -------->

viewtopic.php?f=12&t=62495

OneWayTraffic
* Bateau Builder *
* Bateau Builder *
Posts: 293
Joined: Sat Jan 10, 2015 7:13 pm
Location: New Zealand

Re: spheretex core material

Post by OneWayTraffic » Tue Sep 10, 2019 12:12 am

It would be interesting if you could use it to laminate a thin layer over 6mm plywood, to get a 7mm,8mm or 9mm core. Heavier and more expensive than a layer of plywood, but is it any better? They claim better compressive strength than balsa.

I can get some here in NZ to test, but since 6mm plywood is specified in the boats I am considering to build, I do not know of any reason other than my curiosity. Still it's not a lot of money for a 2mm thick 1m square piece, only $10 or so.

I would not consider a transom from it glassed plywood with epoxy plugs around the bolt holes seems cheaper, faster and just better. Maybe for a chopper boat.

Marshall Moser
Active Poster
Active Poster
Posts: 388
Joined: Mon Aug 02, 2010 3:00 pm
Location: Siler City, NC

Re: spheretex core material

Post by Marshall Moser » Thu Sep 12, 2019 3:42 pm

fallguy1000 wrote:
Mon Sep 09, 2019 7:47 pm
nel.edgar wrote:
Mon Sep 09, 2019 1:57 pm
so.... i searched in the syte of spheretex and they have there a lot of information and also a exemple of use in transoms that u can download... :roll:

as anyone used it as a alternative to wood in transms??
I used corelite 26-28#.

The density of the material is key.

A low density material will crush and mechanically fatigue and drlaminate all but the thickest glass.
Fallguy, can CoreLite be used for hand laminating, or is strictly for vacuum?

fallguy1000
Very Active Poster
Very Active Poster
Posts: 3582
Joined: Tue Jan 12, 2010 12:25 am

Re: spheretex core material

Post by fallguy1000 » Thu Sep 12, 2019 5:47 pm

Marshall Moser wrote:
Thu Sep 12, 2019 3:42 pm
fallguy1000 wrote:
Mon Sep 09, 2019 7:47 pm
nel.edgar wrote:
Mon Sep 09, 2019 1:57 pm
so.... i searched in the syte of spheretex and they have there a lot of information and also a exemple of use in transoms that u can download... :roll:

as anyone used it as a alternative to wood in transms??
I used corelite 26-28#.

The density of the material is key.

A low density material will crush and mechanically fatigue and drlaminate all but the thickest glass.
Fallguy, can CoreLite be used for hand laminating, or is strictly for vacuum?
You can hand glass and hand stack it.

It is easier to stack two 20mm pieces of it using lite vac. You could even bag it with a shop vac, or you can also put weights or bolt pressures. For a professional job, 9-10" mercury and a soft peanut butter mix with a 1/16" trowel both sides gets about a 1 mm thick glue joint which is ideal per my reading at least. You don't need lots of weight. The starting thickness with 1/16th each side is 0.125; so the squeeze is basically filling the voids and forcing some out the edges.
My boat build is here -------->

viewtopic.php?f=12&t=62495

Post Reply

Who is online

Users browsing this forum: No registered users and 16 guests