SD Press - Mark II (Modifications Breakdown) (Page 6 of 7)

8mm diameter, 2mm pitch. I bought the following nuts on ebay and they were an exact match.

http://www.ebay.com/itm/2-pcs-Brass-Fla … 1355296826

I've been down for a while (I've been in and out of the hospital) But I've been feeling alot better in the last 3~4 weeks. So I started to pick back up on the Z Replacement on the Press.

I found a much simpler way to stiffen the bed. The issue is with that plastic 'backboard' that SD uses to hold the acme screw.

So this mod reuses the metal bed but replaces the plastic bits and uses 2040 aluminum extrusion. I have an OpenBuilders anti-backlash nut and two L8UU linear bearings to replace the pressure fitted plastic on metal slides. I am using the MK2B with a custom milled out top and bottom plate to sandwich the PCB and I have a match fit sheet of cork below that. The on thing missing in the picture is the sheet of PEI on top on the aluminum.

And as a side note, Now the bed is fully adjustable (as in with the four screws in the corner- You can now tram up the bed front to rear.)

This setup is hella a lot stiffer than the stock setup and far easier to make then what I was trying to do before.

The next step is to get the Cyclops and the second bowden drive configured (which also has be modified and switched over to all aluminum)

Impressive work! 

Welcome back!

Welcome back! I have actually been meaning to get my bed mod finished, I made the carriage out of aluminum like you originally posted about. I just needed to make sure it all lined up with the linear bearings. BUT I'm loving that aluminum extrusion idea because it makes it infinitely adjustable so you can make sure things are all perfectly aligned, linear bearings, ball screw. Mind spilling where that extrusion came from? I'm going to order one of those open builders nuts right now!

Thanks. I'll have to send them an email and add that rail to my order here.

Did you have to get the nuts from them as well that are slid into the slots on the rail to use when attaching the linear bearings and the ballnut? Or were those just hardware store items?

Perfect. I'll have to add that stuff to my order and get this thing back together and printing. I assume you just milled out that piece of aluminum that you used to attach the antibacklash nut to the aluminum extrusion? Then the two bolts on either side of the stock carriage and the two underneath are just put into the extrusion you're using with a drilled/tapped hole?

Is that aluminum plate setup the one I've seen sold on Amazon for the mk2 pcb setups? Or did you make that all yourself?

Ya. Assuming you did something along these lines. Although judging by the pics and your description you may have milled out the aluminum so that the entire heat bed is countersunk not just the part for the wires to the thermistor.

http://www.amazon.com/Aluminum-Anodized … 00THZJE8S#

Where did you get those beautiful Bowden mount setups? The appear to be aluminum?

not to be rude but, page 1 was a long time ago and a few renditions ago of his current setup.  hence why I asked the question above.  thanks though.

Seems like I am not getting notifications anymore when a thread I am in is active. I need to check that.

But yeah I am still using sheet of 468MP to hold the PEI to the Aluminum.

As for the spacer, Yeah.

4mm thick. When I get home I'll export the DXF.

Yeah your right I dunno where I got the 4mm value from. It's 6.35mm (1/4"). Sorry to hear you are selling your machine. I don't blame you though. Since I was already familiar with SD track record- I already knew what I was getting myself into when I ordered the press. Especially when it was on pre-order sell. It was not that much of a lost.