Nema17 linear actuator with Openbuilds VSlot 4040

This video shows an inline Openbuilds VSlot 4040 with a Nema17 stepper motor. At the end, there's a pic of a Nema23 version. It uses much of the same hardware as the pulley version:
• How to Make a Linear A...
00:15 Start of motion / app control
00:45 Stroke length shortens
01:30 Pic of Nema23
The 3D STL files can be found:
www.thingivers...
The materials list for the pulley version is:
github.com/Mik...
The main point of the video is just to show the design. I'm using Blynk to control via app. While running, it allows changing the speed, stroke length, acceleration, deceleration, torque, and can create sequences of programmable motions. Also it can run remotely over the internet.
One thing steppers do very well is vibrate when the stroke lengths get very short, so I thought that was interesting to show. The lengths are in steps to show relativity. It works out something like 200 steps is 1" (25mm). I've been running the Igus screw for hours and it's developed a bit of wear on the nut. This allows the screw to turn a small amount at each direction change. It isn't critical for my work, but you wouldn't want to put this in a CNC machine.
After letting these machines run for a few hours, I've done some improvements with bearings that have made the motion much smoother. Hopefully I'll have a 'final' version available in a few weeks :)

[@sukamalsaha357]

I want to buy this model what is the price

[@nsfwmachines8343]

I don’t have anything to sell currently, but I update the materials on GitHub.com/mikeachines As soon as I have something to sell I’ll definitely post it :)

[@Edskinny]

Has anyone got one and used it...

[@nsfwmachines8343]

For the VSlot designs, not that I"m aware of. These are new, as old as the videos are really. I've been letting them run for a few hours, and tweaking the design - mostly making sure the end of the screw is supported by bearings. Unlike other screws, the 1/4" Igus is too small to support much weight. The inline (non-pulley) version has a lot of promise, my goal is to finalize the design, materials, and see if selling them would be viable.

[@juanrf7722]

Como lo puedo hacer que funcione el actuador de esa manera, que sistema eléctrico ha que montar

[@massa-blasta]

I wish I could build my own machine and it would be small like a Venus. 😢

[@nsfwmachines8343]

I've recently tried building some smaller ones, I totally understand how compact is important. One way to make them significantly smaller is moving the motor inline but underneath the cylinder. I also might have overestimated the required cylinder sizes. There're so many variables - width, length, even material of tube and cylinder, number of joints... I definitely erred on the side of having to much vs. having too little.