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REVERSE ENGINEERING
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Cold Frame: a Low Wooden Box with a Hinged, Glazed Lid Sloped to the Sun
A cold frame is a low box with a clear roof: a miniature greenhouse for raising seedlings and hardening them off. Build a wooden frame one to two feet tall, glaze a lid, slope it toward the winter sun and hinge it at the back.
The picture: our diagram, the frame in section with its lid toward the sun.
Oqalayo
A day
Imiyalelo
1
1
Cut the sides
Cut the sides
Cut boards for a box about 1.2 m by 0.6 m, the back higher than the front. Cut the two ends to the slope.
Izinto zokwakha zalesi sinyathelo:
Ipulangwe lomphayini4 izicucuAmathuluzi adingekayo:
Ithephu Lokulinganisa
Ipensela
Isikwele esiqinile
Isaha Sesandla2
2
Assemble the box
Assemble the box
Nail the boards into a bottomless box. Oil the wood, inside and out.
Izinto zokwakha zalesi sinyathelo:
Izipikili0.2 kg
Uwoyela We-linseed0.3 ilithaAmathuluzi adingekayo:
Isando esinozipho
Isikwele esiqinile3
3
Glaze the lid
Glaze the lid
Make a frame of board to the box's top. Lay the glass in it and hold it with thin wooden beads nailed round the edge. An old glazed window does the same job.
Izinto zokwakha zalesi sinyathelo:
Ipulangwe lomphayini1 ucezu
Ingilazi yefasitela1 ucezu
Izipikili0.05 kgAmathuluzi adingekayo:
Isaha Sesandla
Isando esinozipho
Ithephu Lokulinganisa4
4
Hinge and site
Hinge and site
Hinge the lid to the back board. Set the frame on level ground with the low side toward the winter sun. Cut a notched stick to prop the lid open for air on warm days.
Izinto zokwakha zalesi sinyathelo:
Ihinji lomnyango2 izicucu
Izikulufu zokhuni12 izicucuAmathuluzi adingekayo:
I-brace nomumu
Isilinganiso Sokulingana
Isaha Sesandla5
5
Lid slope
Lid slope
Ilayisha incwadi ye-Jupyter…
Izinto
6- 4 izicucuIsibambeli
- 0.25 kgIsibambeli
- 0.3 ilithaIsibambeli
- 1 ucezuIsibambeli
- 2 izicucuIsibambeli
- 12 izicucuIsibambeli
Amathuluzi Adingekayo
7- 1 vendor sell this, none ship to you yetIsibambeli
- 1 vendor sell this, none ship to you yetIsibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
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