Source Possibilty: Extrusion Connectors For DIY Sandwich Panel Makers

[opp]

Mr. Jiewereng He has only the profile with a flange . For a cover. Trying to do a trade for some of the railing I have and some with flat profile ebay

Item ID: 254343308930

 

[DzlToy]

Do you really need this type of extrusion? The Europeans have been building and using composite panels in expedition vehicles since the 1980s. I only know one builder (Bimobil) who uses extrusions like the ones you are looking for. Everyone else just glues the panels together and simply covers the corners with a simple corner extrusion. Easy and it works regardless of the thickness of the panel.

This.

Do some research into how companies such as Unicat, BiMobil, Bliss, Boxmanufaktur, Action Mobil and others build boxes. They are using an industry standard 40mm or 60mm thick panel, likely built in-house or by a partner. Panels are joined using adhesives so strong that the panel will fail before the adhesive does. Add some exterior angle to protect and seal the join and Voila!. Companies like KCT make windows to fit 40mm and 60mm panels. That is about as good as you are going to get for standardisation.

You can say that you do not want to do this on your box and there are plenty of companies that will make custom or semi-custom extrusions, to fit your needs. I think you are going to have a hard time getting the DIY community to come to a consensus on anything. There is a reason that top notch European boxes are not built this way.

 

[ScottReb]

Ditto with what Sg1 & DzlToy said. If you want to go overboard put some angle on the inside as well. You can use SS for an accent. But really these boxes have been being built for 30 years and adhesives and cores have only gotten better since then. If it weren't working folks wouldn't be dropping a million plus Euros for them.

 

[Victorian]

Ditto with what Sg1 & DzlToy said. If you want to go overboard put some angle on the inside as well. You can use SS for an accent. But really these boxes have been being built for 30 years and adhesives and cores have only gotten better since then. If it weren't working folks wouldn't be dropping a million plus Euros for them.

If you go with a butt joint you NEED angles on the IN and OUTSIDE! The butt joint it self does not offer any structural strength. The L angles will do that. I would also stay away from Aluminum angles... They need to be treaded with a primer to garranty a strong bond you also need the correct adhesive. Aluminum angles ad a lot more weight than a FRP angle. Aluminum also expands and contracts a lot more than the FRP sandwich panel. Therefore you need extra adhesive the create a "bed" to compensate for that movement. This again leads to increased weight and cost. I have been in this industry for a long time. Have assembled commercial trucks at Koegel and Unicat in Germany. Out of that expirience we designed a system that allows for a very fast system that eliminates everything mentioned above. None of these systems/methods are wrong or perfect. There are always tradeoffs. But they are options and offer solutions for consideration.

 

[john61ct]

I need to carry heavy loads up top, so need an aluminum post & beam rack anyway.

Question is, integrate the "living pod" box or make it a slide-in standalone?

 

[luthj]

Structural composite panels can easily handle modest roof loads. You just need spreader plates to prevent point loading where attached to the panels.

 

[john61ct]

No, need for a solar panel rack, residential panels, as much as will fit maybe slideouts as well.

Awnings, and a roof rack for arbitrary loads, probably 800+ lbs.

And I'm pretty risk averse on stuff like that.