Our solution for the 3D printing

Item 6 is the CR-10 air conveyor with dual Petsfang extruders. I made it in Techinit 5 pretty much when I started to realize that Techinit 5 might actually be the right product, because the PETG always tended to soften at the nozzles (which are very close to the extruder) when the fan was stopped. Done with our product… a fairy tale!

• Because in 3D:
  • Not realizable with other modes,
• Because in Techinit 5:
  • If you are printing PLA and the fan is always on then even if that part was made of PLA itself it would have no problems, but being several hours near the hot nozzle, a less temperature resistant material would start to deform and thus lose the shape needed to convey air to the right place and in the right way.

Object 5 is an extrusion gauge holder. On the other side of the flat face in the photo is some machining that would not have been possible at all in NC. If it wasn’t 3D printed, it wouldn’t have been possible to make it that way (and the internal design is done a certain way to optimize water flow and have a consistency of extrusion.. kind of a mess). The first prototypes were in PLA, and lasted from Christmas to Boxing Day. Then I switched to PETG and something improved, but it tended to warp. With this we solved it.

Item 4 is a pulley for a machine always used in production. Printed in two halves and then joined for printing time reasons. The 4 holes are to lighten it and give it more structure. I’ve tried making it in PLA, PETG, PLA+Graphite but to no avail. This one seems to work (and last). The pulley makes very few revolutions (linearly does less than 10 km per day) but always supports a weight on the shaft of about 30/35 kg, and the other within a few weeks crumpled (especially the part of the central shaft is worn).

Item 3 is a “base” into which a small press threads washers (the ones I asked you about via Whatsapp a while back) onto those inserts pictured.

• Because in 3D:
  • Decidedly lower cost than machining on metal, for now it seems to last as long as it does without any particular problems.
• Because in Techinit 5:
  • That piece is constantly “subjected to impact” and I’m sure that with other materials it would have been destroyed in an instant…

Item 2 is a custom hinge for a panel on a processing machine. 3 hinges carry about 40 kg of weight (I was wrong with the 50 in the previous email).

• Because it was made in 3D: because I wanted it exactly as it is and there were none on the market that satisfied me

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• Because in Techinit 5:
  • Because it supports that weight well without blowing away like PLA or PETG. I didn’t even consider other materials

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Object 1 is a support that is to be installed in a machine used in production. The upper hole makes 40 mm, the lower one makes 50 mm. The support could be made of metal, with costs certainly higher not only for the realization of the finished piece, but especially for the countless changes it has undergone over time. The hexagon is used to adjust the angular position with respect to the cylinder (wrench size 70) before being press-fitted onto the machine. Since the inside of the hexagon is press-fit, it must be dimensionally accurate and have an excellent finish. Consequently, we printed the object with the hole a bit “narrow” and ground it on the lathe. The longitudinal holes on the ring are used as seats for tubes and the hooks are used to attach elastic clips.