LSD! Lead Screw Delta Printer by morganlowe

Last crawled date: 3 years, 1 month ago

So sitting at the table watching my little Rostock Nano go one of my friends says "Hey! Why not 3DLS that?" and I got mad, then I did.
Introduction Video!
This machine is a mini, it's 200x300 build volume or so. I'm sure it can be scaled up but I have no need for a large delta.
It's all printed and since I have a lathe I set it up to use the 8mm rods as structure. They are drilled and tapped M4 to bolt the machine together.
Parts are sized to fit snug and may require additional hand work to get a perfect fit. This is to maintain tight tolerances.
It's designed to use Haydn Huntley’s MagBall Arms at 215mm for the smoothest and tightest operation.
Electronics wise it's got a SKR 1.3 with TMC2209 drivers and a 24v supply. It uses large steppers to drive the leadscrews.
BOM:
Lots of filament.
This is setup to run a BLtouch but it's optional.
E3D V6 or equivalent.
Your favorite extruder and motor!
Lots of wires....
M4x12 screws to hold the uprights.
M4x25 screws to secure the upper and lower sections together.
Assortment of M3 screws to attach motors.
Some 608ZZ Bearings
3 Collar Locks
12864 LCD kit
Large 2.1a stepper motors
200mm Glass Bed
600mm 4 start lead screw
600mm x 8mm smooth rods
Igus Drylin LM8UU bearings
2x 50mm 24v Blowers
3 x Noctua 40x10mm 12v fans or some other brand but these ones are so nice.
Endstops
You'll need some M3 Self threading or Plastite screws about 4mm long for mounting endstops and circuit boards and 10mm long for mounting the bearing caps and other plastic parts to each other.
I used a 400watt 24v power supply.
There's space in the electronics tray for a Raspberry Pi, SKR, Quad MOSFET board and 2 voltage converters.
One for 12v from 24v and one for 5v from 24V to power lights, fans and the RPI from a single 24v power supply.
Optional Flying Extruder
You will need 12 tie rod ends like these and 12 M4x20 socket head bolts and nuts plus 12 M3x12 bolts and nuts to mount the tie rods in. Print the parts with "Flying Extruder" in the title and skip the regular carriages.
Optional Filament Switch
This uses the same switches as the endstop and mounts to the top with some of the extruder mounting holes. The inlet side is nicely curved and the output side is sized to take a M6 compression fitting for bowden tube to keep things neat. Definitely needed for the flying extruder.
Optional Heated Bed
You can get a heated bed made to about 180mm round 24v from China on Ebay pretty cheap. I used some thermal glue to put a thermistor same as the hotend in the middle of the heater on it's back side. This is fine and plenty close enough for a bed. You should insulate it though, I just used these cheap 220mm square ones cut to fit. Set the bed limit in Marlin to 60c if printed from PLA or PETG and 80c for ABS to not melt the printer.
Optional Strong Base
This is just a big fat reinforced base. It uses the same M5x30 screw in the top but also a M4x25 screw in the side. It just has a lot more beef to it.
Settings for Marlin are as follows:
Delta Height = 313mm
Delta radius = 220mm
Delta diagonal rod = 215mm
Delta Printable radius = 195mm
I added 2 x 10mm holes and a 13mmx40mm recessed area on the effector to pass wires through and install a small LED light strip under it.
I uploaded a screenshot of the electronics base in Priusaslicer for the 3DLS. It's a 235x235mm bed and fits with plenty of room.
I have not yet finished mine so consider this subject to change. I just changed everything in fact to give it more room to move within it's own self.
Thank you!
For more information join our Discord
Parts are ordered and printing has begun!
-Update 4/17/2021 Added a LED Light strip mount that slides over the smooth rod uprights to hold 55mm or so strips of LED light tape.Also added captive nuts for the upper and lower mounts. They use M5 hardware. Made an extruder mount that screws to the top parts with M3 plastite screws. Can be mounted inside or outside of the bar. There's a 0 degree and a 90 degree extruder mounts.
-Update 4/19/2021 Added a flying extruder option for those who might want it, Also added a filament sensor that uses the same switches as the end stops.
-Update 4/3/2021 Added 1 piece top and bottoms. Found a thin spot in the effector, re uploaded with improved design.
Update 4/10/2021 I'm putting it together and finding my errors. Many small changes and files uploaded. Soon it will be done and once it's no longer a work in progress everything is verified to fit.