question for Rumba 2 users experts (Page 3 of 3)

looks like I am going to need a replacement Lawsey Y right side Carriage for the LM8UU bearings as the top main bolt hole broke loose. seems it could be modified to have twice as thick shoulder since only the belt tension section is above it, or at least angle braced front and rear instead of just a U shape as thats where stress is that breaks it. the bottom one has the angle bracing giving more support.

purchase some new belt material, it is worth the cost. Belts do wear out, it is always nice to have extra on hand. just use an old one to get the length you need.

https://www.amazon.com/BEMONOC-5Meters- … M2MQTR90DG

cant say I have ever had a carriage break in the spot you say this one broke.. perhaps it had been over tightened? or possibly not well printed.
but yeah a new carriage would be in order if it has cracked..
you could possibly try fixing it with a little acetone if it is printed in ABS.. I have done that before, and it works pretty well. just a cheap artist brush (the 10 in a pack for a $1 type) to brush a little acetone across the cracked area, then clamp it tight and let it sit for about a half hour or so

no, the stock pulleys are MXL, not GT2, and the two are NOT interchangeable.

Wrong on so many levels. 

Absolutely nothing different or rare about a post July 2013 SD running that board.  It is indeed a standard PrintrBoard as shown in the WIKI and commonly referenced throughout the forum.

Let me clarify for others that may read this.  The boards you pictured were (not the one directly above this post) installed on all Solidoodle printer models post July of 2013 (approximately).  It is commonly referred to as a PrintrBoard.  It is (like most 3D printing stuff) Open source.  Solidoodle simply had them manufactured with their name on it.  It is easy to spot due to the non removable drivers.
Prior to July 2013 Solidoodle utilized the Sanguinololu boards for all models all the way back to serial number 2.  It was easy to identify because of its removable drivers. 
These are the only 2 boards Solidoodle ever used. 
You are correct about one thing.  The WIKI pictures that were once there are no longer.  I will be sure to repost them showing the 2 different stock boards.

I just edited/added the pic of Printer board on Wiki in my last post above and its NOT whats on any of My SD2 printers never saw it on others but who knows. the 3 pics being referred to are of a brd off an older SD2 than My original which I recieved 6 years & 2 months ago new from Solidoodle and the older printer has a couple other things My original SD2 dont as they were changed, one is a thin Cork lining inside bottom of the SD2 and the other is a thin wood panel on back to mount MB to for some reason. also the Printrbrd pic is rev F so it was a bit after the one I posted which is Rev-E. Solidoodle experimented lots while making their printers and lots of odd parts were used on some units in same month. look at the 24 SD3 factory rack pics elsewhere on this forum there are at least 12 different units with many different parts than others including Hotends and all electronics. they were behind on delivery's and improvised alot lol just sayin

ah was wondering that. so the guy just stuck his old SD3 brd in the box with parts printer after upgrade likely. so do those brds over heat easy with no heat sinks on brd mounted motor controllers? and do they have the pins for part cooling fan? maybe it would be a good upgrade for my Original SD2 if printer type was changed in firmware.

personally, i would not bother with the Printrboard. There are far better options available out there, Rumba included.

my personal experience with the SD Printrboard include a failed USB connection on one, and on another, a failed stepper driver - and with no way of replacing the stepper driver, that means the entire board is no longer any good.