Preservative Treatment
December 28th, 2016All beams and floor will be soaked in borax solution before being tarred and oiled.
Oil: 1 Litre will cover 1 sq metre to a depth of 1mm, though wood's solidity may give 4 times that coverage. Calculations for cost do not account for absorption, so will see how my initial £640 purchase goes. See comment 1
External and base:Stockholm tarand linseed oil 3 coats min: turpentine for absorption on base and outer faces of walls. 1 coat with Linseed Oil too. (minimum on build, more to follow)
Internal and roof: 3 coats min of linseed oil 2 coats with turpentine primarily to dilute for absorption. See: https://calstock.org.uk/index.php/cabin/timber-for-base#c125
For info on borax see Page 2
For continuing treatment of the base see Page 3
For info on commercial 'Teak Oil' see Flag Teak Oil and Comment 4
Oil and Wax as Varnish
December 30th, 2018Comment 1, below, has sources for hard wax and varnish. Carnauba wax seems to be the hardest. I bought 500g fromcornelissen.com
Using a double boiler I heated the carnauba wax and linseed oil. Comparing the end product tohumblebeeandme.com/quick-guide-carnauba-wax . . the mix was probably 1:8 wax to oil. I did directly heat the container for short periods to speed up the melting.
To apply I diluted 1 part of this soft wax with 2 parts turpentine and brushed it onthe three main beamsonce they were in situ.
Linseed oil paint
September 5th, 2019From the Palaeolithic Period to Early Romantic Art many of the paints were made using the same materials in the same way using natural minerals as pigments such as:
Green = malachite (basic copper(II) carbonate CuCO3.Cu(OH)2), a mineral found in many parts of the world where copper veins have been altered by weathering and contact with rain. It was used for eye-paint in Predynastic Egypt and as paint on tombs.
Red-brown = haematite (iron(III) oxide Fe2O3), a mineral found in many parts of the world. Ochre is clay that is coloured by varying amounts of haematite, from 20% to 70%. Red ochre contains unhydrated haematite; yellow ochre contains hydrated hematite (Fe2O3 H2O). The principal use of ochre is for tinting with a permanent colour and has been used from Palaeolithic times.
Black = charcoal (carbon C), an element obtained when organic materials are burnt;
White = calcite, limestone, chalk and marble, (calcium(II) carbonate CaCO3). Calcite is a mineral that makes up limestone and chalk. Limestone and chalk are sedimentary rocks found in many parts of the world. Chalk is a fine grained form of limestone. Marble is a metamorphic rock formed from limestone that has been in contact with an igneous intrusion. This heat changes the crystalline structure to form large crystal grains making it very hard. All forms are found in painting as white pigments and for other purposes. Calcite was used as a white pigment. Chalk was used with animal glue to form a ground coat (white surface for painting on) and as an extender. Marble was ground up and used in fresco painting. Marble is also a popular material for sculptures.Copper(II) carbonate – Toxic (Cat 3 oral) and Irritant (Cat 2 skin, eye and respiratory)
Basic copper(II) carbonate – Acute toxin (Cat 4 oral) and Irritant (Cat 2 skin, eye and respiratory)
Calcium carbonate – Low hazard
Iron(III) oxide – Low hazard
Carbon powder – Eye irritant (Cat 2) Respiratory irritant (STOT SE3)
http://www.rsc.org/learn-chemistry/resource/res00001590/making-paint-with-minerals?cmpid=CMP00004330
Pillar to Beam
July 21st, 2017As well ascopper pins,in red above, locating and steadying the beams on the stone pillars, there will be a copper sheeting between the pillars and beam such that the copper will cover the pillar and some 12.5mm down the side using 0.5mmcopper sheet.The tops of the all nine pillars are 100mm square.
Pillar to Beam
The pillars are in two pieces, a) the base of some 16" square rising to 6" x 9" and b) a preformed truncated pyramid of base 6" sq; the top 4" sq. with 100mm of copper rod protruding some 50mm. So will make a cast for the pyramid. SeePillar to Post
The pillars will be in two pieces, a) the base of some 20" (60cm) square rising to 8" (20cm) square and b) a preformed truncated pyramid of base 6" (150mm) sq; the top 4" (100mm) sq. with 100mm of copper rod protruding some 50mm.
Example: Pillar 1 Base
The mix is 1 bag sand, 1 shovel of OPC, 1 shovel of pea gravel, 1/2 shovel of hydrated lime.
All things considered with no levelling it seems reasonable, one of the small top, truncated pyramids was also fashioned.
Truncated Pyramid Top
Top 100mm square :: Height 100m :: Base 150mm square
Copper Rod of 100mm, 50 mm protruding from top
Given beam widths of 100mm the corner pins are:
length 6500-(2x50)mm or 6400mm | width 4800-(2x50) or 4700mm
diagonal is 7940.4mm (7940)
(6400 x 2350) diagonal is 5685.9mm (5686)
(3200 x 2350) diagonal is 3970.2mm. (3970)
Can do 3:4:5 or 5:12:13
Caulking Irons & Mallet
April 22nd, 2020Managed to find three irons and the mallet. The irons required a bit of rust removal and the edges had to be ground down and re-grooved.
The irons are usd to hammer fibres, oakum or cotton, into seams before caulking paste is applied.
Stockholm | Pine Tars
May 31st, 2019July 14th 2022 This tar is much less viscous than the previous one, however it is summer.
Wood tar is produced when making charcoal or burning stumps. . . .The tar dries slowly, taking around 3–4 weeks to achieve a dry surface. During that drying period, the tar has a strong odour that fades over time.
swedishwood.com
A soaking oil of 1qt. turpentine, 1qt. boiled linseed oil, ½ pint pine tar, and ½ pt Japan dryer is used on some work boats and collection vessels. This mixture has been called "Old Down East Deck Coating" by some people. A variation of this coating for a wood preservative below ground eliminates the Japan dryer, and the other three ingredients are of equal measure by volume.
nationalhistoricships.org.uk ~ pine_tar_history
(Compares to my idea of 9:1)
- auson.se ~ pine-tar :: info@auson.se
- timbersave.co.uk ~ Auson pine tar
0161 483 0229 :: stephen@slcuklimited.com
10Lt Genuine Pine Tar £126.40 + VAT
10Lt Kiln Burned Pine Tar £170.21 + VAT
& carriage of £22
£382.33 - traditionalboatsupplies.com ~ stockholm-tar-genuine-pine-tar
0117 330 5905