Mk2S Upgrade kit and printing parts problems.  

Re: Mk2S Upgrade kit and printing parts problems.

Agreed. Or offer a optional kit that includes printed parts.

Re: Mk2S Upgrade kit and printing parts problems.

So uh, do you think the gcode caused the tangled spool or something?

I would guess their current printer farm is busy churning out parts for full printer orders.

Re: Mk2S Upgrade kit and printing parts problems.

gz1 thanks for the reply 🙂 The coil of filament is very long. It needs careful handling and can be entangled easily, it should have been provided on a spool. I tried putting the coil of filament on a holder. The filament became entangled yes, my fault yes, my point, I should not have needed to print the new ABS parts in the first place. Bottom line, I have to print with another material and I do not have a genuine Prusa MK2S printer, which is what I wanted to upgrade to. I have held off with the upgrade now. Wasted money, no, but a poor experience. Have a good day/night etc

Re: Mk2S Upgrade kit and printing parts problems.

Oh I didn't realize it wasn't on a spool. I've read a lot of reviews of people complaining of tangles inside spools, which is amusing.

I don't disagree with your opinion that they should make the parts available for purchase. If there's a customer out there that wants to throw money at you, you should, you know, maybe take them up on it. I think it's funny to have to remind businesses of this.

I think there's... logical followup and consequences.

Their printer farm is apparently constantly busy producing all of the printed parts. If that's the limiting resource (I don't know if it is, but it seems likely), it would make sense that they would use that capacity to fulfill full printer orders instead of upgrade orders.

If the printer farm capacity is a limiting factor... maybe they need to reduce their printed parts load.

Like, you know, in 2017, you'd think the designs for the Z axis motor/rod mounts would have stabilized by now. Maybe send those off and have someone else produce them in large quantities to ease the load on your farm. Same goes for the awful spool holder, which is really, really not worth tying up a printer for.

Re: Mk2S Upgrade kit and printing parts problems.

Update: .......... I bought a 1kg reel of Orange ABS from RigidInk, and printed the MK2 upgraded parts without issue. Problem was with Prusa supplied coil of ABS I guess.

Re: Mk2S Upgrade kit and printing parts problems.

Update: .......... I bought a 1kg reel of Orange ABS from RigidInk, and printed the MK2 upgraded parts without issue. Problem was with Prusa supplied coil of ABS I guess.

For future reference, my ABS Prints stick like glue, when I *thoroughly* wipe the bed with Acetone before printing.
(take paper towel, fold small, put some acetone on, and rub. repeat 3-4 times. cover the whole bed and don't touch it)

Re: Mk2S Upgrade kit and printing parts problems.

Hi mavu

I always wipe the bed with IsoPropyl Alcohol (95%) before printing. I used another spool of filament, problem I had originally (with Prusa supplied filament) went away.

I get perfect ABS prints right now with the new spool of filament I bought.

Acetone is a bit aggressive and can damage ABS parts if spilt on the printer.

Re: Mk2S Upgrade kit and printing parts problems.

Acetone is a bit aggressive and can damage ABS parts if spilt on the printer.

Nigel

Acetone works very well as a PEI stick restorer. Over time PEI will not hold the modes as well as it did initially. A scrub with acetone will generally restore that stick.

Peter

Re: Mk2S Upgrade kit and printing parts problems.

I'm with you Nigel. I just received 2 upgrade kits from MK2 to MK2S and I tangled one spool of orange ABS. I manged the second one OK. And why not include the printed parts for goodness sake!

I used to run a Lulzbot Taz5 and I only every printed with ABS because it almost always worked. I bought PLA, but never actually used it. Since I have been running 2x MK2's I have grown to hate ABS and will use PLA even when I shouldn't. Lift-offs during printing, the meshbed calibration seems to be off every 1-3 prints, corner lifting, unstable bed temp when I use cooling. Of course now I need to print the new orange parts for my MK2S upgrades and they are not working.

I would really like to fix my ABS problems on the MK2 and hopefully soon to be MK2S systems.

Any advice is welcome.

What I do for every print?

1. start with a clean and cool system (I clean the bed with 70% isoproanol x 1).
2. I run the meshbed level 2x
3. I manually check and adjust the z height using a post-it note and the Adjust Z option. I aim for a z height where the post-it note is tight, but still moves.
4. when the print starts is a) meshbed levels again, b) heats up to target temp of 240C and 100C, c) starts to print.

I have started to use the a brim on nearly all parts, which helps some.

Thanks,

James

Re: Mk2S Upgrade kit and printing parts problems.

An update on my printing issues.

After reading here, I cleaned my bed with pure isopropanol 3-4 times with a hard scrub using a paper towel. Also, I took a fine sand paper and scratched up the surface of the bed and cleaned it again with isoproanol.

I started the ABS print again and this time it looks very nice with excellent adhesion. I also started another problematic print on my second system, after the bed treatment, and it looks 100% as well.

Hopefully the MK2S upgrade will help with my meshbed issues and the newly rough/clean surface will fix my adhesion issues.

James

Re: Mk2S Upgrade kit and printing parts problems.

Ok Peter, thanks for the reply.

I stand corrected and will try acetone in the future.

Re: Mk2S Upgrade kit and printing parts problems.

Another trick. Apply UHU glue stic on the PEI surface, problems with ABS go away 🙂 I bought my stock of UHU stic a long while ago from e3d-online.com

http://e3d-online.com/UHU-Stic

I went back to it and joy oh joy, successful prints with difficult filaments again

The glue stick can be washed away between prints. I have used this method over the last few days with PEI sheet on my Prusa I3 MK2 and on PrintBite on my Ultimaker 2+ Perfect ABS and ASA prints now.

I also use UHU-Stic with PLA, remote supports do not fall over, they stick. A complex print I took on here from another member.

Re: Mk2S Upgrade kit and printing parts problems.

Thanks - I'll try that again. I tried it back a couple of months, but it was not as good of a result as you mention, I wonder if I used too much or had other issues at the time.

Jim

Re: Mk2S Upgrade kit and printing parts problems.

Jim, I am not kidding I get great prints using UHU glue stic. With ABS I use Prusa default temperatures. Hotend 255DegC and bed 100 DegC. No cooling fan on object.

Tried Makers Muse test object of the day and sliced with latest Prusa Slicr with Z hops. With orange ABS. Results better than my Ultimaker 2+ with same object sliced with Simplyfy3d but using PLA.

Re: Mk2S Upgrade kit and printing parts problems.

Hi,
I'm really new 3d printer user and this one is my first post. I can tell my best way for good adhesion with ABS (of course I have learn in this forum 😀 ).
I prepare in a small recipient a litle of acetone with some small parts of ABS, Mix it, and when it's disolved, with a peace of paper towel, i make wet with the mixture and I apply a thin layer on the bed (of course that first layer should be previusly good configured with the live z adjustment).
This method is easy to apply, cheap and very easy to clean later with acetone.
Regards from a happy new mk2s user.

Re: Mk2S Upgrade kit and printing parts problems.

Welcome iker.e, what you talk about is ABS juice. An old technique that does work. I use UHU stic and get perfect ABS prints on my Prusa I3 MK2 now. No messing about with acetone and dissolving ABS filament. I still have my Prusa supplied ABS juice. Never opened and used on my PEI sheet.

iker.e , You are new and yet you use abs dissolved in acetone to get good ABS adhesion , that's advanced 🙂

I suggest an easier solution UHU-Stic. It works for me now across my printers with ABS. I get perfect ABS prints right now.

Re: Mk2S Upgrade kit and printing parts problems.

I used first the supplied stick from prusa, but it was before good first layer calibration 🙄 and ofcourse that it not work properly.
Now that i have my first layer calibrated I will check again with the stick because with the abs juice it's hard to remove the printed parts 😳