Ytec3D Forum

The orrery is done

http://ytec3d.com/orrery/



The Instructable will be posted in the next day or two.

That looks absolutely amazing. Sorry to hear about the reload mechanism, but it still is amazing. Good luck with the Pip-Boy and the Fat Man.

A quick update. I have not been uploading to the forum for a while, there are several reasons. 1. Some things got in the way that kept me busy. This is something between work, a good contest on Instructables and a wedding present that is proving to be quite a handful. The project for contest on Inst...

Update time. It has been a while since I posted anything, so here it is. Printing is 80% done. I have printed all the gears, gear arms, legs and Jupiter. The base had an SD card error 95% in. It is usable, but I want to reprint it again. A few planets and the sun remain. All gears are printed in gol...

It is not a prop, but it is in progress. I often bend my current projects for instructables contests, and sometimes start a project on my list when a good contest comes along. Now I thought of a project when I saw a contest. http://www.instructables.com/contest/space2016/ . Don't get me wrong, the T...

What has 100 pins and is a disaster to solder by hand. If you guessed porcupine, you guessed wrong, it is the L6452. The short version: I tried to solder it by hand, I failed. I went to the hackerspace, where they have hot air soldering, smd paste, and all other sorts of tools. I repaired mine, some...

The 10x resistor and the thermal sense resistor are both on the same chip and made in the same process. The thermal sense resistance and 10x resistance are different on both printheads, but when you subtract the 10x resistance from the thermal sense resistance, you get roughly the same number for ea...

The head is flash vaporizing a tiny droplet of ink. The hotter the fluid is already, the less it needs to be heated. Heating a droplet too much might lead to overheating or excessive wear on the printhead. Because there is a difference of 13 ohms between the 2 heads I have already, the difference wo...

Time to put our thinking caps on. Due to a weird conversation with someone on this forum this afternoon, I was told that the 10x resistor actually does something else if addresses are open. This person then mauled all his/her posts, and I had to delete everything, but I was still curious. What if th...

The 13 ohm difference does not come from the spring contacts. I think it comes from the interface between de flexible circuit (on the HP45) and the actual printhead section, which is made using a different process. The resistance in the printhead section can be manufactured very precisely, but the c...