Atfer Hbot, go to CoreXY. (no replies)

Hello,

Many time I don't have post there, the last time was to show link, solidworks file, and somes pictures of my own HBot printer.


Atfer 1year with very good result with my printer, some noise appear because the lm8uu don't like moment force. And so, make some groove on my hardened steel rod. But atfer near than 1000hours of printing i think it's "almost" normal. So for me a refurbishement/retrofitting/upkeep of the machine mean change for a better one system :)

The problem with the HBot, is the rackforce, it's not really a big problem. It's only appear, when you want to print parts with some gap (hinge/bearing/...). And the other problem is the dyneema/spectra/fishing line "belt", this solution is cheap and good but I can't get more than 1200mm/S² with my pulley.

So I have draw my own real CoreXY (not hbot) with aluminium part, and Gt2 belt.

Now the most important: This printer can be made with printing part in ABS/PLA, or with "simple" aluminium milling.
I have printed the first prototype in ABS, and after that I milled all the parts in aluminium.

And the teasing:


Tomorrow or for the next week I will post more info, picture, files, etc...

Edit: I have time before going sleep.

My deadly dismounted old Hbot:


All parts have been printed, but have been dismounted atfer dry mounting and prototype validated for aluminium milling:


Aluminium parts after holes, taps, etc.. Gt2 idler pulley have been made from simple gt2 pulley 8mm bore we can find on the net and 11mm idler pulley have been made with simple aluminium and carbon tubing.
Need many m3x6 Fhc screws, 24x 633ZZ, 8x igus bush (can put lm8uu instead), and some plastic spacer, and printed plastics gt2 belt anchor.


Atfer some screwing, the CoreXY axis is ready and alive:


I know that I need to finish: Dual nozzle mounting or single nozzle mount + Z autoprobe, reorganize the wiring etc... add some elbow on top of the printer.


Sorry for the bad pictures quality, no more battery on my real camera.