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For Anyone Who's Blindly Followed the I3 Design.

Posted by MechaBits 
For Anyone Who's Blindly Followed the I3 Design.
February 12, 2018 11:06AM
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Edited 1 time(s). Last edit at 02/13/2018 12:58AM by MechaBits.

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Re: For Anyone Who's Blindly Followed the I3 Design.
February 12, 2018 12:55PM
This looks so sleek ! A prusa with no frame...
Re: For Anyone Who's Blindly Followed the I3 Design.
February 12, 2018 08:33PM
I'm tempted to leave the hotend at the back to keep things looking Sleek smiling smiley
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So I either printed a Z motor mount or a Z Nut Lever....but I added a rod end to a Motor L plate to attach to the 12mm rod,
the new center was just out, so better to print a new lever rather than motor mount.

Edited 1 time(s). Last edit at 02/13/2018 01:30AM by MechaBits.
Re: For Anyone Who's Blindly Followed the I3 Design.
February 13, 2018 01:41AM
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A Little Tidier, just hotend mount to do, and a better motor for X & maybe Z.

Edited 1 time(s). Last edit at 02/14/2018 10:03PM by MechaBits.
Re: For Anyone Who's Blindly Followed the I3 Design.
February 13, 2018 02:03AM
Nice looking machine, minimalistic, very atmospheric photography.

Do you think it will be stiff enough?


[www.precisionpiezo.co.uk] Accurate, repeatable, versatile z-probe plus piezo discs, endstop cables, pt100, 50w heaters. Coming soon PT1000 cartridge sensors plug straight into duet boards.
Published:Inventions
Re: For Anyone Who's Blindly Followed the I3 Design.
February 13, 2018 05:22AM
yeah it's stiff enough, given it a good tap and it's solid, if i grab the idle end of X and move it up & down I can do it but not much(perhaps a little flexing at the motor bracket, but doubt it will be a problem when printing.


We all know how 3D Printers Kinematics is something to think about .
I like to add a little 3D Printer Cinematics smiling smiley

Edited 3 time(s). Last edit at 02/13/2018 10:01AM by MechaBits.
Re: For Anyone Who's Blindly Followed the I3 Design.
February 15, 2018 11:54AM
The LED's I fitted to the arm on other printer have many tiny points and no diffusion, it really shows up imperfections in prints, more the Z line registration, i'm not too bothered with the corner buldge(I was never happy with these white belts, and even the black belt I just got has the wire in it, I'd rather have the softer stuff than the shiney stuff), I find my LED a tad too bright for balanced pics, I think the new strip I have under this new printer even though its thinner seems to be more diffuse light throw, could be because i've no bed in there yet...

Changed the Z Motor Mount orientation to get head lower, dont think it looks as good this way round so I added a little plate I had to disguise it a little, also moved the linear rail to the top of the 2020, to make the hotend mount easier/smaller/tidier tiny 2mm screws are not the best for mounting the rail but look good on the cart...cant decide if it looks better with the streak of the silver rail or all slim & black like it was...does it make it look better built, look Ma! it has no wheels...

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Re: For Anyone Who's Blindly Followed the I3 Design.
February 15, 2018 12:40PM
That looks really nice!
Re: For Anyone Who's Blindly Followed the I3 Design.
February 16, 2018 04:52AM
Looking for a picture of the whole machine when it's complete. Keep up the good work!
Re: For Anyone Who's Blindly Followed the I3 Design.
February 18, 2018 02:48AM
@New Perfection, glad you like it, it kinda feels like a new perfection

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@Mathew It's very near complete, all wired up, a few new things came in post, cable sleeve & another openbuilds plate, now it ooze'z sex appeal smiling smiley, need another print surface, normally get the MK3b...even though i'm yet to wire any of them up, but I noticed a slightly larger heatbed but one that still has holes in same place as standard heatbed...so I can use this build plate with it...though for £20 I might as well treat myself to some cast plate 300x200 though perhaps not on 8mm rails, easy swap for 12mm rails though, I've a couple of little pieces to print still for it but just small cable guide & belt clip thing. I have some pics where I have a brace between rods at top but they restrict print height, and it looks much cleaner without, i mounted the extruder at top of rod same method as Z motor.

As much as I like it as it is , i'm also tempted to strap it to one of the last available sides of the borg box assimilator.

Edited 4 time(s). Last edit at 02/19/2018 02:27AM by MechaBits.
Re: For Anyone Who's Blindly Followed the I3 Design.
February 19, 2018 02:26AM

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Not much more I can do without ordering a few things, 300mm lead, Heatbed, though might try just mounting the glass tile, design another part cooler, holding back on printing box for ramps, I need a few and they eat plastic, and i'd much rather have a better simple alu project case, unless I can think of something cool that needs to be printed.

Edited 1 time(s). Last edit at 02/20/2018 12:55AM by MechaBits.
Re: For Anyone Who's Blindly Followed the I3 Design.
February 19, 2018 05:04AM
What is the purpose of the vertical smooth rod on the left of the printer?
It only keeps the X-carrier arm from rotating? Bot OTOH,there is a risk for racking because it is passive ( not driven )
Is there a cleaner solution to fulfil the same purpose, like adding a second rod to the right?
Re: For Anyone Who's Blindly Followed the I3 Design.
February 19, 2018 08:36AM
Why blindly follow ?
The Prusa is just an evolution of this set up. It doesn't require such a sturdy base, beefy smooth rods and even beefier brackets to secure them to the base. Easier to make the rods // and stay //. Two more bars from rod tops to the base and it is rock solid.
The main issue of the Prusa is the moving Y table (and the two Z motors for the original and clones)


"You failed to maintain your weapon, son" (Harry Brown )
Re: For Anyone Who's Blindly Followed the I3 Design.
February 19, 2018 08:56AM
@Olampe, your right on one thing about the bar on the right, it stops any unwanted movement, it is passive and doesnt bind, most of my other printers have rods to the right, ie 2 rods near each other, i've been told a few of them would rack too. The other new arm I have will have 2 rods closer to each other, with the rail coming out from them.

@MKSA The Prusa with all the threaded rods is the one I was singling out, I dont deny it makes a strong frame, with lots of pieces( & looks really bad especially when the metal dulls, nasty), Sometimes the Evolution is less parts more refined, not more parts & complexity. I have a brace for the top, but dont think it needs it, the mounts the rods are in have 2 grub screws to lock the rods, If I made my own base, I would try to loose the mounts I have, and just have holes in a thick worksurface, and if that wasnt good enough, i'd introduce a few rod ends top & in recessed worktop bottom, or just put base on some feet so I didnt have to make a recesses.

Many other printers gain rigidity from the desk they are place on, why not have 2 holes in your desk...then I dont need the piece of wood.

Also the clamps I have 2 with Rods & 2 without, the ones without are used as feet, but I could use them for some buttressing, but it would be more vertical rods, and i'd have to make more of a box, more work to do diagonals.

Edited 2 time(s). Last edit at 02/19/2018 12:06PM by MechaBits.
Re: For Anyone Who's Blindly Followed the I3 Design.
February 19, 2018 01:22PM
Quote
MechaBits
@Olampe, your right on one thing about the bar on the right, it stops any unwanted movement, it is passive and doesnt bind, most of my other printers have rods to the right, ie 2 rods near each other, i've been told a few of them would rack too. The other new arm I have will have 2 rods closer to each other, with the rail coming out from them.

@MKSA The Prusa with all the threaded rods is the one I was singling out, I dont deny it makes a strong frame, with lots of pieces( & looks really bad especially when the metal dulls, nasty), Sometimes the Evolution is less parts more refined, not more parts & complexity. I have a brace for the top, but dont think it needs it, the mounts the rods are in have 2 grub screws to lock the rods, If I made my own base, I would try to loose the mounts I have, and just have holes in a thick worksurface, and if that wasnt good enough, i'd introduce a few rod ends top & in recessed worktop bottom, or just put base on some feet so I didnt have to make a recesses.

Many other printers gain rigidity from the desk they are place on, why not have 2 holes in your desk...then I dont need the piece of wood.

Also the clamps I have 2 with Rods & 2 without, the ones without are used as feet, but I could use them for some buttressing, but it would be more vertical rods, and i'd have to make more of a box, more work to do diagonals.

Curious to see how // the two vertical rods are !
From the picture the lead screw doesn't seem // to them either, I hope it is just the picture. Anyway, as long as everything is somewhat flexible it won't bind.

Edited 1 time(s). Last edit at 02/19/2018 01:23PM by MKSA.

"You failed to maintain your weapon, son" (Harry Brown )
Re: For Anyone Who's Blindly Followed the I3 Design.
February 19, 2018 04:18PM
you have a good eye, the thing for the leadscrew was measured in place(more than twice), i'd say I got the position of the hole out by .5mm or 1mm but a little tilt on a leadscrew never hurt anyone, as for the rods they are both mounted to the board in the same way, they could be out, but I cant see it or feel it, and as I can move the rod mount easy if I want to make the printer cantelevered I bring the rod to motor side, and make some spar's or something, but it is only there to stop rotation, the main rod(or lead) is taking all the weight.
Re: For Anyone Who's Blindly Followed the I3 Design.
February 20, 2018 12:52AM
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Not Quite as Ingenious as LoboCNC's Inverted Machine, but I'm happy with what was just a box of bits cluttering up the box of bits.
Printed the glass holder, but I made them too small 10g's, needs more support below and a little more at top,
and I need more screws rapidly running out of all sizes.
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