Greetings from Ensenada, Mexico

[wayn]

Greetings!

I have a H-1.1 kit. The mechanical assembly is complete.
The electronics is connected, but I haven't been able to get firmware for the Rambo controller. Also, I can't fnd the correct stepper motor connections.

I'd appreciate communicating with anyone who has build the H-1.1 with the Rambo and has it working or anyone who is building a similar machine.

Wayne

[wayn]

Ok John at SeeMeCNC gave me some code that works. I made a couple changes so it work better. I can print parts. I'm using several on my 3D printer. But I still need some fine tuning. I have torun=ble with large parts; as the new layers cool they stress the lower layers and pull them off the table and de-laminate the layers, severly ditorting the part. Any suggestions on how to fix this would be appreciated!

[mhackney]

wayn, are you printing with PLA or ABS or something else? ABS is notorious for warping on the first few layers. The most reliable way to prevent that is with a hot bed. Even PLA will benefit from a hot bed. I have had good success printing on 3M blue painter's tape with PLA for large parts and ABS with smaller (2" x 2") parts. John and Steve like to print ABS on acrylic sheet which also works well but I was going through a lot of acrylic (pock marks, etc)!

I print on glass on a hot bed for everything now.

One other thing, whatever you print on, clean it well first! I use isopropyl alcohol (but keep it away from heat!) even on the blue tape.

cheers,
Michael