hans_w shares:
The emptier a ketchup bottle is, the harder it is to get the contents out. Therefore I fill the rest of the ketchup at about 2 cm rest into an almost full (new) bottle.
So I get the old bottle cleanly empty, without knocking or poking.
It is best to put the almost empty bottle on its side for several hours to allow the ketchup to flow together there.
Then screw everything together, place it vertically and wait until the upper bottle is empty.
I have no idea whether all ketchup bottles have the same thread. Designed for and tested with Alnatura Tomato Ketchup (germany).
The adapter consists of two parts, that are screwed together. This was necessary to avoid supports.
download the files on: https://www.youmagine.com/designs/ketchup-refiller
Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!
Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!