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Hello! I am currently in the process of attempting to make an extrusion machine from the V3 plans and I have some questions regarding the barrel and the drill piece (I have a 26mm Auger drill piece).
1- How much clearance is needed/recommended to have between the barrel and drill piece?
2- Is the surface finish on the inside of the barrel necessary? If so, how could this be done?
3- Where have the barrel been purchased from (and what material)? I've tried looking for the recommended barrel (35mm diam., 5mm wall thick.) and I've struggled to do so.
4- What other methods are there of attaching the nozzle to the screw?
Many thanks!
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