MK3S to MK3S+ upgrade - Super PINDA only?
I bought the MK3 to MK3S upgrade during the summer of 2020. I'm just now getting around to doing the upgrade. Now that the MK3S+ upgrade is out, other than the Super PINDA is there any other parts between the S and S+ kits that are different on the extruder assembly.
It looks like the filament sensor in my S kit is the new red one so as far as I can tell from the documentation that should be the only thing different. Are any of the printed parts for the extruder assembly different from the S upgrade kit?
I figure it I'm going to rip the extruder apart for doing the upgrade and the Super PINDA is the only difference I'll just order that and do all the upgrade at once.
RE: MK3S to MK3S+ upgrade - Super PINDA only?
The printed parts of the MK3s+ extruder are a little different. Including the fan duct.
You could just print the MK3s+ parts. All other hardware is like the MK3s except for the SuperPinda ofcourse.
But you may have to check the fan duct. The fan duct in the kit is printed in ASA. If you have some heat resistant filament you can print your own MK3s+ fan duct to complete the MK3s+ upgrade.
I have checked some parts that I have printed already for my MK3s+ upgrade (not send from Prusa yet) and it looks like the mounting points changed, but the MK3s fan duct still fits the MK3s+ (not the other way round)
RE: MK3S to MK3S+ upgrade - Super PINDA only?
The MK3S+ upgrade kit contains everything needed for upgrading from MK3 to MK3S+ (and MMU2S).
When upgrading from MK3S there will be parts not needed as they are already changed by the MK3->MK3S upgrade, but still the upgrade has more than just the SuperPinda.
As @baklin writes, there are new printed parts for the extruder body to "straighten" the filament path and make printing with TPU/TPE easier. That means that there will be yet another new PTFE tube length (42.3 mm) for hot end (included).
The new extruder body design has better air flow design to give better cooling and reduce heat creap.
The kit includes new y-carriage bearing bracket mounts to avoid damage to linear bearings when assembling, one IR sensor for MK3 upgrade and the new two point mounting part cooling shroud.
If the MK3S you already have is working without problems, the recommendation is to not upgrade.
Have a look at my models on Printables.com 😉
RE: MK3S to MK3S+ upgrade - Super PINDA only?
@area51
I haven't started the MK3S upgrade yet. I was thinking about getting into some TPU printing so if the + is better for that I might as well upgrade just to save that hassle. If I only need to print the new parts and order the PTFE tubes (these are only 1 mm shorter than the S kit tubes) and Super PINDA then that works. Just want to make sure there isn't anything else I'm missing. I'm going to get some ASA to print the the cooling shroud but I don't see the new + parts files listed yet.
RE: MK3S to MK3S+ upgrade - Super PINDA only?
@bret-o
Hi Bret,
the New Mk3S+ uses a RED filament sensor, whilst most of the Mk3S had a black filament sensor... this is not a big factor, but mentioned for completeness, I believe Red is slightly better performance (If you rely on the Filament sensor... )
regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
RE: MK3S to MK3S+ upgrade - Super PINDA only?
@joantabb
As I stated originally my S kit had a red filament sensor. I guess they switched over to that one during the S shipments.
RE: MK3S to MK3S+ upgrade - Super PINDA only?
@bret-o
I considered to just upgrading the SuperPinda and printing the new parts, but the kit pricing is fairly low - I decided to just go with the upgrade kit for my MK3S and MK3S+MMU2S and placed that on order.
I have updated my PTFE Tube Chamfer and Cut Jig on PrusaPrinters to accommodate the new length of PTFE tube so if you decide to do it yourself, that can be use to cut the right PTFE tube length.
Have a look at my models on Printables.com 😉
RE: MK3S to MK3S+ upgrade - Super PINDA only?
The old black sensor gave zero volts when in the "off" position due to filament being loaded, which meant the MK3S couldn't tell the difference between an extruder with filament loaded and an extruder with a broken connection to the filament sensor. The new red sensor gives a tiny voltage when in the "off" position, so if the firmware (v3.9.0 or greater) has had the filament sensor detection routine manually initialised, from then on it will know the difference between filament loaded, filament unloaded, and broken.
Compared to the MK3S, the MK3S+ extruder has a slightly different mounting method for the filament sensor, an extruder body that has three channels cut into the side opposite the idler to allow for greater air flow (albeit passive), a hotend fan shroud with an additional support on the other side from the mounting screw to help prevent sagging, and three new features to make initial setup of a disassembled kit easier: New metal Y axis bearing clips (to replace the U bolts that could damage bearings if installed badly), printed Y axis rod holders (that no longer need cable ties to hold the Y axis rods but do need M3x10 bolts to clamp firmly), and new X axis ends (with improved tensioning screw). Overall, a user of a perfectly working MK3S will not get any significant benefit from upgrading any of these components (mine isn't so I'll be replacing the extruder at least).
I wasn't aware of any change in PTFE tube length though. Is it definitely the case that the PTFE tube that I need for a MK3S+ extruder will be a different length than the standard MK3S one? It would be good to know before I tear mine apart 🙂
RE: MK3S to MK3S+ upgrade - Super PINDA only?
@matt-14
The specification for the various Prusa printer PTFE tubes can be found here: How to trim PTFE tube - Original Prusa printers
The length for MK3S+ is 42.3 mm and the length for MK3S is 44.3 mm.
The new length is shorter and the old tube can be trimmed to fit the new extruder design, using the tool I linked earlier 🙂
On the shop web page for the MK3S+ tube:
It is ONLY compatible with the MK3S+ and MK3S+ with MMU2S hotends. It is NOT compatible with the MK2.5, MK3, MK3S hotends.
Have a look at my models on Printables.com 😉
RE: MK3S to MK3S+ upgrade - Super PINDA only?
Thanks for the link to the specifications - That's going into my bookmarks. I note that the MK3S+ tube has a different inner diameter as well (1.85mm+/-0.05mm, vs. 2mm+/-0.1mm for the MK3S) - Hopefully this won't have any significant effect on operation. It also has an additional tiny inner chamfer on the front end. I expect in this case that it is important to cut the outer and inner chamfers at this end before trimming the overall length, so we don't inadvertently shorten the tube.
RE: MK3S to MK3S+ upgrade - Super PINDA only?
@matt-14
Good catch Matt. I noticed the length difference but missed the diameter difference.
I'm guessing that diameter helps with flexible filament having less room in the tube and retracting better.
RE: MK3S to MK3S+ upgrade - Super PINDA only?
@bret-o
the hot ends for the MMU and mmu2 setups have been using 1.85mm PTFE for years. so you shouldn't have any problems on that front
regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
RE: MK3S to MK3S+ upgrade - Super PINDA only?
The new internal diameter of 1.85 mm was introduced with MMU2 to better form filament tips when changing filament in the MMU2. As @joantabb points out, this has been working for years and should be of no concern.
Have a look at my models on Printables.com 😉
RE: MK3S to MK3S+ upgrade - Super PINDA only?
Printed in PC and waiting for my SuperDuperPINDA. Just cut 2mm off the existing PTFE tube and chamfered.
RE: MK3S to MK3S+ upgrade - Super PINDA only?
I opted to only update to the SuperPINDA on my printer. I've already gone ahead and changed out the extruder and hotend and replacing the original factory parts with SLA printed pieces from a different manufacturer.
The install of the SuperPINDA was pretty easy, if not a bit tedious for having to redo the loom... again. Other than that I had to update the firmware, redo all the leveling, and it seems to print just as before. So, not a big obvious improvement that I can really say I've noticed, but I like the capabilities advertised for the new SuperPINDA.
Aaron