Affects: 300 ZL and 300 ZLT BOMs.

The non-integrated PanelDue and 5" display combination is no longer available from Filastruder, so the BOM link doesn't get you to the right part.

This link is for the PanelDue 5i with a 1 meter 4 pin cable:
https://www.filastruder.com/products/paneldue-5i?variant=12524929876039

The price is $89.99

It would be quite helpful if the electronics enclosure on the 300ZL was larger. There seems to be ample real estate to do it and I'm not sure of any compelling reason not to.

Doing so would allow us to make the wiring tidier as well as improve our options for better isolating/shielding the wiring (or at least terminals) that carry mains voltage. I designed some parts for guarding the power supply terminals, but actual assembly was problematic in the current enclosure (issue #9 should help that, though).

It appears we could expand the enclosure 25-30mm toward the front and back and 50mm vertically lower and still fit comfortably, as well as still allow the cover panel to be cut from the waste piece out of the machine's front panel.

Obviously this could be made available in future panel sets by just cutting them for the new enclosure size. We could also develop a retrofit kit that includes the updated electronics box panels as well as printable corners that use the new panels but still mount to the old holes so that older railcores don't need new mounting holes cut.

They seem to be a popular add-on.

By adding holes in the bottom panel in F360 for the brace, it sets a standard distance, laser cut or milled precisely so the extrusion is definitely straight.

That way also, additional mods such as https://www.thingiverse.com/thing:3629939 can also be standardised somewhat.

The wiring cutouts in the top panel of the electronics corner are extremely tight if one sleeves the cables and runs additional cables through the cutouts.

I have the cords for PanelDue, front stepper, and a filament out sensor all running through the front slot. All are sleeved, and they end up pinched in fairly tightly. Expanding this slot a little bit would be a big help for people with similarly built-out machines.

The bottom screws in the frame are accessible via holes in the bottom panel until the feet are installed. A clearance hole through the foot would fix that.

Foot with clearance hole v2.f3d.zip

Because longer will fit and more X-travel will result.

affects 250ZL, 300ZL, 300ZLT BOMs

The parts 40mm_Fan_Cover and PSU_Vent_Cover are missing from the Printed Parts List tab in the various BOMs.

Also, the list of "printed parts not needed" that appears in the 250ZL BOM on the ZL Build Differences tab, should probably be included somewhere in the 300ZL and ZLT BOMs, so that self-sourcers don't print unneeded parts if they aren't following all the documentation too closely.

Right now it's quite a lot of work to take any of the side panels off the electronics enclosure since they are all secured with nuts and bolts and access to the nuts is challenging.

Electronics box corners that used heatset inserts for all screws would make it possible to remove any side of the panel individually.

This would make it a lot easier to remove the front panel to gain access to the SD card, for one example.

As title. Self-sourcers can get stuck on that bit if they don't have standoffs "in stock"

Kind of think that the number of nuts added to the extrusion in the early stages could do with a major bump up to 12 or more.

Also some on the sides? Thoughts?

Steve L

So I had a head fan crash tonight. Kinda bad. As the carriage moved to the left and then to 0,0 home, the 40mm Noctura Fan with @jstevewhite slim fan shroud, the entire fan got pulled away, breaking the shroud and pulling a wire out of my hot end thermister.

BUT i found an elegant solution. It's only cost me a small amount of Z-Height. I took the bed off, then removed BOTH of the left Z yokes. I reversed the yokes so the rail car is now below the bed plane, and the vertical part of the yokes are also pointing downward instead of upward. This gives me MUCH more room on the left size so no more fan crashes!

pic1
pic2

I think this is worth considering. Lose Z height, gain X where the Z extrusions are.

The electronics enclosure should have a bottom panel to keep stray fingers away from mains wiring.

I am currently running a printed one. I will get the file published for feedback/use by others. Longer-term, this should really be a standard part CNC cut with the other side panels.

I want to float the idea of starting a community-driven improvements section in Github to the RailCore project.

Two main parts to this idea:-

Ideas or improvements, which then become sanctioned improvements and merged into the RailCore 2 build.
For ideas and improvements that can't be merged into the existing build, be submitted to "RailCore 3" for consideration on that project.

Head crashes seem to be the major worry for people.

So how about micro-switch emergency stop on the print head, in a location 1mm lower than the users existing probe.

Bonus points for adding 2 more micro-switches in series:

• one located at Z max , so if Z max is exceeded somehow (this is pretty optional and almost certainly unneeded)
• one as an emergency stop button on the frame (this is optional, but seems quite nice)

What type of emergency stop is up for debate. However with RTOS I'm fairly happy with just triggering M112/M999.

Is this possible?