Monday 26 September 2016

Henry David Thoreau's Walden: Summary and Analysis Educational Video

Henry David Thoreau's Walden: Summary and Analysis Educational Video

Saturday 24 September 2016

Making Shelter Flashings from Door Off cuts & Pallet Edge Protectors

 Plastic strips cut from the edge of door panels (thick upvc plastic in white, light & dark brown)  are screwed to a pallet edge protectors with silicon sealent

In place on a roof section   - View 1
 View 2
 View 3
View 4

 Inner side  view 1
 Inner side  view 2
 Other side

Constituent Parts  on outside . On inner side 2 edge strips are screwd into each side

  Pallet Edge Protectors
  Pallet Edge Protectors- Inner view
 Door panel edge off cut showing plast ic cover part peeled
 Door panel edge off cut
Plastic has a tacky clear plastic film cover. This can be easily peeled off & scrunched up. This can used to block draughts in a shelter or for packaging material 

Sunday 11 September 2016

Experiments with Flood Area Pontoon Boat that Forms Pillar & Wall of a Shelter When Not in Use

Experiments with Flood Area Pontoon Boat that Forms Pillar & Wall of a Shelter When Not in Use

If not required as a boat, the pontoons could be filled with soil / rocks to weigh down the floor of a shelter . Another can be raised to act as an insulated wall.

2m Long with foam core grp fibreglass pontoons & Deck made from composite door off cuts.

They are strengthened with 2m door edge strips of grp skin plastic core strips. These strips still floats & is a similar density / weight to hardwood

Wider deck (still 2m long)

Pontoons will be filled with insualted panel 2m long offcuts that consist of polystyrene, plastic & mdf. Voids will be filled with expanding foam.

Showing the 3 basic parts, 2 pontoons & a deck. If the pontoon is attached directly underneath the deck, it may only need 3 sides.

It is intended to bolt the deck to the pontoons

Underside of thinner deck showing panel type construction

 Close up of top of Deck showing stregthening with edge strips & screws using Lumberjack pu glue.

I have started using self tapping torx screws which do not need pilot holes, though a bit more expensive. I dip the screw point in glue to lubricate on entry & stengthen screw join & help stop splitting. 

Lumberjack glue by Everbuild is sea water resistant

I experimented with a second type of pontoon, binding the buoyant core strips together with pvc straps & screws

Then encasing the buoyant core with a grp roofing sheet & screwing shut

Fully enclosed

Folding the front end to make it streamlined, ready to accept a nose cone or fibre glassing (undecided as yet) 

Side view

If a deeper pontoon is required, this is a posibillity, using the curved ends of a door off cut to form the stramlined bottom

Pontoons will most likely be covered in fibreglass.

Thursday 8 September 2016

Prototype Wedge Block Shelter with Grp Window Cladding & Composite Door Edge Off-Cut Frame / Corner Brace

Following on from previous prototypes here, & here,  this shelter is a lightweight, quickly constructed progression.

It is constructed by one man alone (to save labour costs)  it's currently unfinished, a work in progress

The cabinz project has support of a supplier of opaque grp profiled roof sheets at very low cost (less than £3 a mtr). These are very strong & light, & are old stock / slight seconds.

We are selling these sheets for £4 a metre (no Vat ) in the Uk, to rasie funds for the Cabinz project shelter research. The project is currently funded only by voluntary labour & small donations

We recently sold at cost & donated 140 of these grp sheets to a third party aiming to build low cost shelters in Sierra Leone, Africa. This prototype is made partly to explore options for how such shelters would be made .

The frame & corner braces off-cuts are donated free by a Uk composite door manufacturer  

Note. This prototype has been screwed together, so it can be easily remodelled.  The finished design will most likely be bolted & glued at main joints for extra strength.

The intention is to long term strength test this shelter. The roof frame alone, has been tested to 100kg load.

Side view (corner to be trimmed)

 End view with roof side & door to be installed

Low side view. Gutter & water capture barrel are yet to be installed 


 Corner bracing with pvc  door frame off cuts screwed on

Floor bracing as above

 Roof frame before installation.
  Note: an extra beam on each side was added later for strength (not in pic) . The cross beam on top was removed before fitting. Another will be added underneath , so roof sheets have a flatter surface to be screwed to.