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Spun Stainless Steel Bowl on a Lathe
Metal spinning forms a flat disc into a round, seamless shape without removing metal. A form block the shape of the inside of the bowl is mounted on the lathe, the disc is clamped against it by a pad on the tailstock, and as both spin at speed a levered tool or roller pushes the metal down over the block. Because the bowl ends up smaller across than the disc, the metal must thicken, stretch or wrinkle as it is pushed down. For stainless steel the tool is solid brass. The same method makes cookware, lighting, gas cylinders and brass instrument bells.
高级
1–2 hours
说明
1
1
Cut the disc
Cut the disc
Cut a round disc from 304 stainless sheet, larger than the finished bowl.
此步骤所需材料：
不锈钢板 - 3041 个2
2
Mount block and disc
Mount block and disc
Fit the form block to the lathe headstock and clamp the centred disc against it with the tailstock pad.
所需工具：
金属车床
旋压芯模3
3
Spin
Spin
With the lathe at speed, lever the spinning tool against the disc and force the metal to flow down over the block.
所需工具：
金属车床
金属旋压工具4
4
Trim the rim
Trim the rim
Cut the uneven rim off square while the bowl still turns on the block.
所需工具：
车床切削刀具5
5
Remove and check
Remove and check
Take the bowl off the block and check the rim diameter and that it sits flat.
所需工具：
6 英寸数显卡尺
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