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  1. kos.neo

    Designing a metering pump, chromatography.

    Hello. I am in the process of designing a "syringe" type pump using a 304ss tube of 25mm ID, 3mm wall and the idea is to use a solid round ptfe piston. For the actuator I intend to use a 2.2Nm stepper motor nema 23 closed loop with a 12mm OD 4mm step integrated ballscrew, 200mm stoke. The head...
  2. kos.neo

    Manufacturing a polycarbonate part questions

    Hello. I am trying to make a polycarbonate cover out of 3" ID polycarbonate. Basically its section of a 3" tube 4-1/2" long, split in 2 parts. I have been lookin at clear PC tube supplier that could cut the pieces for me. I am affraid I dont know how to do that myself reliably with enough...
  3. kos.neo

    Maypole braiding machine spindles per work diameter?

    Hello. I am interested with building a maypole braiding machine for using a carbon fiber tow of 3k (3k its about 1/8" wide strip). The object to be baided upon ranges from a 1/4" to 3/8" in diameter. My question is how many spools are needed to cover that range of diameter for the carbon fibers...
  4. kos.neo

    Wire straightening, need advice.

    Hello. I am bending some stainless steel wire to make bicycles and what not, tipically the wire I use ranges between 1/16 - 3/32 in diameter. A local wire supplier can sell me wire in winding of 20in in diameter and I need to straighten it and cut it in pieces that I can use. I use hard and...

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