I know this isn’t cnc but I think most (especially @Marcus_Wolschon ) will be interested in Ben Heck’s latest project where he builds a briefcase sized 3D printer. We need an update on Marcus’ travel cnc.
http://youtu.be/xJndXebTG9I
update?
I have installed the milled AlMgSPb parts to raise the portal.
The new stepper drivers have arrived and I want to install them this week.
Then it will be operational again.
(The entire car stinks of the burned out chinese stepper drivers.)
Lessons learned: NEVER trust the specifications of a chinese dealer.
advertised: 50V for continued operation
operated at: 48V
actual absolute maximum peak rating: 45V
They advertised only 11% over the rated value?
That is unusually honest.
Not 11% over the rated value.
11% over the absolute maximum rating.
Huge difference.
We’re talking high power electronics here.
This thing has a 16A 230V power plug because I felt a 10A plug wouldn’t cut it.
They got the fire extinguisher and pulled every cable they could find. It still smelled of fried electronics across 2 giant exhibition halls for a few thousand people.
This is a neat printer, but 2 things bother me:
- he doesn’t seem to have a mechanism to lock the Y axis in position, it looks like a friction fit.
- 200mm by 200mm is not 200 mm^2, its 40,000 mm^2.
Yes. Ben Heck’s gizmos aren’t well built but rather just quick “proof of concept” things. He just proved it could be done now others can do much better with better materials, more engineering / design work & more attention to detail.