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Sheet-Iron Flue Pipe, Rolled and Riveted
A flue carries the smoke and gases of a fire up and out; it works by the rise of the hot gas, so it needs a good draft. Roll iron sheet over a pole into a pipe, rivet the lap seam, and narrow one end so each section slides into the next.
The picture: our diagram, the flat sheet and two riveted pipe sections.
中级
Half a day
说明
1
1
Mark and cut
Mark and cut
Mark a rectangle on the sheet, as wide as the pipe's circumference plus the lap (step 5), and cut it with the snips.
此步骤所需材料：
铁板（锻打）1 个所需工具：
直尺
两脚规
铁皮剪
皮革工作手套2
2
Roll it
Roll it
Lay the sheet over the pole and bend it round a little at a time with the mallet, working along its length, until the edges overlap by the lap.
所需工具：
笔直的木杆
木槌皮革工作手套3
3
Rivet the seam
Rivet the seam
Drill rivet holes through both layers along the lap. Set each rivet with its head on the anvil and close it with the rivet set and hammer.
此步骤所需材料：
铁铆钉10 个所需工具：
手摇钻
铁砧
铆钉工具组
圆头锤4
4
Narrow one end
Narrow one end
Over the pole, tap one end in a little all round so it slides a few centimetres into the next section.
所需工具：
笔直的木杆木槌5
5
Sheet size
Sheet size
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