This seems like a good place for the endstop?..maybe not. my bad.
It will hit the support rail, not the linear rail
This seems like a good place for the endstop?..maybe not. my bad.
1 Like
Nice! Assuming most builds end up with Alu plates, will you change the name to MM3DP (Mostly Milled …)? So little plastic being used so far. Final versions of the corner plates can help square up the frame?
Thank you sir! That looks so cool with the belt twist like that!
Still milled and printed… I actually do not like MP3DP, but nothing else makes sense, yet.
Sandwich printer?
then maybe call it the vicious3dp = V3dp
1 Like
We’ll have to see what it looks like when it’s done.
DIY 3d Printer…that would do well in SEO.
1 Like
Seeing it together really helps make some things come together. I am excited to move forward.
How are we with the Horizontal rail? Are we willing to give up the X linear rail mounting plate to have a vertical rail?
you might get the wrong crowd if you called it the vicious DIY and abbreviated it…
1 Like
Yes seeing it together puts it in perspective. It looks great!
Love it!
No
1 Like
agree.
Horizontal rail with car on top for easy access.
I like this one:
Which also looks like this one:
@vicious1 The plate pulley holders look good as does the crossing belts. The low slung fan is something I was thinking about yesterday having had to reprint my part cooling fan mount and trying to think of a smaller simpler setup. I wasn’t sure how that would work and if there was sufficient clearance for it, but interested.
1 Like
I like the bearing block on top too.
Sorry if you explained already…
Does “X linear rail mounting plate” mean the plate attached to Y truck that connects X linear rail to Y rail? i.e XY mounting plate?
LOL, I still like vertical 
But, I don’t have additional reasoning to support beyond what people have said already. I don’t feel strongly enough to push that hard on this. For example, I haven’t fully considered various tradeoffs/consequences/opportunities of how vertical X rail positively and/or negatively impacts mounting to Y rail.
I am wondering whether tool changer will be easier, and making adapter plates for diff extruders too. Personally like the idea of direct contact between rail block and extruder. Ideally the belts are sandwiched between the 2 3mm (or 2.5mm) plates.
People that observe concerning XY vibrations could add more linear rail?
Yeah the one shown here, https://us2.dh-cdn.net/uploads/db5587/original/3X/f/4/f40a1f4cb59836ac0e608aa42c62c5943ad19dd9.jpeg
Do you think your two plate method is better than the direct mount that is coming along?
Those would need fine teeth milled in to work??
It seems like either way we have a plate on the bearing surface adapters could be made I suppose. I am not seeing a tool changer as a huge design driver unless you have something in mind you want to make work. Either way the belts need to be mounted to a plate and the tools attach to a plate. Without a current design to accommodate I am not really seeing how one is better than the other.
The part we will lose though is the flat plate to mount the X rail on. Is a possible future toolchanger that happens to use a vertical bearing instead of horizontal a reason to ditch what seems to be a good, solid way to mount the rail?
With this two plate system, what is the advantage vs just using one? Is the red one just to stand-off from the screw head in the yellow? If the yellow had a counter bored screw hole would it be better as a direct connection to the extruder?
Or are you just saying you want the belt s mounted in a plate, not the current way. I guess what I am getting at is I am not seeing what the biggest advantage of this is?
With this it is still a flat vertical mounting surface, the screws come into the extruder from the back.
2 Likes
I still like vertical, I like having the moving mass as close as possible to the axis center, but it’s not a big thing. The rail being mounted to an aluminum plate like that is probably a bigger benefit if we can’t have that with vertical.
This is what I am thinking.
I think the balls are the point of contact, so the closer to the actual ball bearing is the actual point that matters. If that is true it is not all that different.
Then sprinkle on a little, the rail is stronger this way and the force it greater in this plane because of accelerations. (although I think this is negligible)
2 Likes
Just taking a quick look, if the bearings are the part to consider. A vertical mount gets us 12mm to the face, as this sits we are at ~16mm to the face.
4mm is more than I expected.
I can bring that down to 7.5 if I move the belts a little bit.
If you think that is the correct thinking, I will start moving the belts.
1 Like
I don’t know what’s correct, and still don’t have a strong opinion either way. Since this isn’t closed, I’ll ask a couple more questions…
- Was thinking Alu plates would be able to handle higher temps and stress, don’t have to worry about delamination, melting deformation, can maybe side step any issues current Core has. But will likely introduce new diff probs, LOL.
- I don’t have good answer for how belts would mount, I’d need to dig around and see how others with Alu plates do this.
- Will mounting EBB/CAN Bus, securing wiring, and other stuff needed be easier/harder with either arrangement? Briefly thinking/asking about overall hotend assembly incase that helps nudge towards a specific direction.
- Maybe you end up with a practical plate that’s raised in the middle?
e.g. Rough sketch… Center would likely need to be filled for misc extruder mounting holes, hopefully with polycarbonate, LED backlit of course…
Am going back to look at your earlier questions, and try to respond, but wanted to share this half arsed idea incase it sparks something useful.
Agree
I think this is not a huge deal with higher temp material, we know now not to use PLA. But yes aluminum would be better.
For our current layout it will have to involve a printed part of some kind, unless I stack them. other printers using a flat plate also use belts planar to that plate, are are not.
same, both are still using a vertical plate. One just already includes printed parts (which might make it easier to edit and add to).
2 Likes
doing it with an aluminum plate means any other person would need to add their own holes., that sort of thing is easier in a printed part (if there is room).
1 Like
I am done for the night, I will take a look tomorrow.
I will make the belt spacer, then we need a decision on the rail or we will be at a stand still.
2 Likes