Kitmaysay

billyde2003

This is a 3 piece model rocket I designed to take Estes E-class engines. There is a 'launch lug' on the outside of the fin section to fit over a 3mm guide rod which I recommend to keep the trajectory straight during launch. &nbsp;There is also a similarly sized internal lug in the mid section tube for attaching the parachute cord and nose cone. For the parachute cord I use 3mm para-cord as it needs to be quite strong to take the force of the ejection charge. &nbsp;The parachute itself is made from rip-stop nylon sheet, which I cut into a hexagon shape that is 600mm across the flats. Light weight kite string is tied to each corner of the parachute and each length is approximately 500mm long, the 6 strings come together and are each tied to the para-cord.&nbsp;The fin section and mid section are glued together using 2 part epoxy and the nose cone is designed to be held in place with a secure friction fit. &nbsp;Additionally, I have made the motor cover plate out of 1.5mm aluminum sheet which I cut out by hand, but you could easily3d Print or laser cut one that would do the job ok. The purpose of the plate is just to stop the rocket engine blowing itself out the bottom when the ejection charge goes off. 4 M3 x 10 cap screws are needed to hold the plate in place.

E-Class Model Rocket

Science

mkersjes

I did not quite like the closed pattern of some others so i made mine a bit more open and in a lower layer height for less visibility of extrusion lines.

Voronoi lying tiger

hedglintyler

<h4>Summary</h4>The idea for a lock-pick set that you could carry around in your wallet came to me when I began to learn how to pick locks this summer for fun. It was partly inspired by the velociraptor business card, partly by the desire to print the whole set in one go without a raft. So here it is. You may find that it's a bit too flexible for some locks. I made it small enough that you can use it on typical padlocks. Please let me know how well it worked if you print it.<h4>Instructions</h4>&nbsp;0.2 layer height Still experimenting with other settings.&nbsp;

Science

Art

Tools