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Hi guys....

Still not that impressed with this kit.... I finally managed to get my printing after the kit arrived wet, rambo was not loaded with a bootloader meaning I had to fork out cash for a arduino programmer to update my firmware and still my prints just wont work...

What work runarounds have people got to stop the rostock max nozzle lifting the print? The tip of mine all have very shallow angles and ANY tiny stray plastic will catch, stick and then lift the print.

I have set my z well, using sugar and abs juice on the glass and when the it first lays down plastic I get good sticking.... After the head comes back around the the little blob from the first line of plastic catches then sticks to the nozzle ripping parts away from the build plate...

I have noticed no other printers have shallow nozzle angles or am I doing something wrong?

You sound experienced with 3D printing - so maybe a few questions:

What software are you using? I've rarely had luck with Slic3r.

Other settings? Layer thickness, bed temp, head temps. Photos?

Can you provide more info? Also, it sounds like you might be pushing too much plastic if it's blobbing.

JohnStack wrote:You sound experienced with 3D printing - so maybe a few questions:

What software are you using? I've rarely had luck with Slic3r.

Other settings? Layer thickness, bed temp, head temps. Photos?

Can you provide more info? Also, it sounds like you might be pushing too much plastic if it's blobbing.

No this is my very first printer but I work as a cnc tech/builder so sort of familiar with this sort of thing.

I am using all of the recommended settings in the latest revised seemecnc docs ( http://www.geneb.org/rostock-max/Rostoc ... -Guide.pdf )

0.2mm layer thickness
0.3 for first layer

bed is 95c and extruder at 230 for my blue 1.75mm abs

I will do an other print and take a photo.

JohnStack wrote: What software are you using? I've rarely had luck with Slic3r.

I'm running Slic3r as that is what is suggested in the build instructions but if people are getting better results with an other program I'm happy to jump ship!

Do you use Z-Lift?

aehM_Key wrote:Do you use Z-Lift?

Oh not yet.... off to test now..... thanks for that!

Also note that the bootloader was installed by Ultimachine, not by SeeMeCNC. If they didn't do it right, when SeeMeCNC loaded Repetier on it, it would blow the bootloader and require that it be re-loaded if you wanted/needed to send the firmware to the board again. The bootloader should live in a "protected" memory space and if the protection bits aren't set, the bootloader will over-write itself with the first firmware update it processes (or so it was explained to me a year or so ago.). Keep in mind that the RAMBo is essentially an Arduino Mega 2560 with all the necessary shields all on one board.

g.