The Leapfrog Bolt is an independent IDEX printer. Both heads are on the same X&Y, but capable of dividing the bed between them to print two (identical or mirrored) parts simultaneously from two different materials, as well as the usual two color/material printing we're used to seeing. Getting closer. Fun printer to watch, too! Oh, and they say the chicken came first...the protein that makesby Diggrr - CoreXY Machines
4 is the most I've seen, I gather it's a limit as to how many drivers you can hang off of a board as well as kinematics getting complicated, being on the same plane and all. Tool changing looks to be more promising, if someone were to build a multiplexer board--a one driver board that switches what tool (extruder motor) it's running via g-code. Then you could fill the back wall of a printer withby Diggrr - CoreXY Machines
My mini was the older Ethernet model, and it was painfully slow (like check the mail and pour some coffee). Ethernet on my GT is zippy fast, taking only seconds for large files. I don't use wifi at home since I caught the neighbor kids actually calling Hughes trying to get my router passcode...(customer service sent me a survey)..no, they didn't get it, but persistence of that level is rarely unby Diggrr - Next Wave Electronics Working Group
With a Z resolution of .004mm, you should try .332 for layer height. Your "correction" is likely the motor snapping to the next full step instead of the non-integer microstep you're trying to force. Cool project. I had an i3 style screwdriven, but it kept tearing up the X v-wheels with an off-center drive. Rods should do better. I also found the ringing on Y wasn't from the drive or the bearingby Diggrr - Reprappers
Interesting, so just 3 wraps on the drive pulley is enough to stop it slipping? I ask because dragging a ball through sand is going to be quite the side load compared to a printer. Very cool project, and perfect timing to coincide with my design phaseby Diggrr - CoreXY Machines
I did my 6 in the US Army...just to get that out of way. We've elected far too many people of greed and wealth for them to work together long enough to take our freedoms. Our government couldn't organize a fruit salad. Paranoia is entertaining though, but not as much as 3D printing.by Diggrr - General
If there were a real threat, would not the ownership of the 3D Printer be prohibited as a condition of parole/probation soon? Hmmm. Personally, I don't see the attraction, to each their own, I guess.by Diggrr - General
I like it! Personally, I think H-bot gets a bad rap from people using 8mm smooth rods and printed axis parts, throwing rigidity out the window (for any printer design, really). Curious as to what you've found with the Chinese clone rails. I've not tried them for all the horror stories..by Diggrr - CoreXY Machines
I print mostly with ABS, and though some brands have more fumes than others, I've had a few brands that make my eyes water and irritate my throat for days. Mine is ventilated to my unused chimney in my very old house, using just two little 2050 blowers...you don't need a ton of air for exhaust, just a little negative pressure. I've printed some crazy plastics, with no MSDS available, like Fluorocby Diggrr - General
Using an external mosfet for the heater, it's relatively easy to change just the bed to 24V, while leaving the rest of the system on 12V power. Then there's no need to change other heaters and fans to the higher voltage, and no need to play with voltage dividers and such for LED's or other gubbins you have attached. I use a 24V 200W silicone heater pad stuck to a 230x230x3mm aluminum plate withby Diggrr - General
Thought on this for a bit, but the ratio is roughly 5:6 for string length, and shouldn't react vastly different from each other. The longer section does carry the greater load though...hmm.by Diggrr - General New Machines Topics
There is also the DW-BOT (Dualwire-gantry) on Thingiverse..Link Here Very clever system with separate X & Y, not like a Core system. Blended with polygohell's solution to stop the wire from "walking" up and down the spools, I think it would be sweet.by Diggrr - General New Machines Topics
I don't use crimps if the pad under the screw is corrugated or ribbed. The soft copper strands deform into the ribs for whole contact, and the rigid crimps do not. Besides that, I prefer the mono-metal contact .vs a secondary unknown alloy (from the land of cadmium filled jewelry). Just my $.02.. Interesting project!by Diggrr - RAMPS Electronics
Azteeg (Panucatt Devices) is in Irvine California, not China, not a clone. I've found the boards and drivers to be quite well made, but support for hardware and firmware is sketchy at best...your Google-Foo must be black-belt or higher. Seriously.by Diggrr - Next Wave Electronics Working Group
I did not know that, I haven't yet bought my spindle. It had confused me as to why arduino boards have a 0-5, yet other boards have a 0-10..thanks!by Diggrr - Duet
When I ran a Seasonic ATX, I found that the bed using PID severely messed with the short circuit protection in the power supply. I solved it by using bang-bang on the bed (continued to use PID on the hot-end), and it no longer had any problems.by Diggrr - RAMPS Electronics
I got mine from reprapchampion.com, now re-opened as gulfcoast-robotics.com...HERE I haven't bought from them since they re-opened, but have many decent things from the former store. They carry the best V6 clone I've ever used, hands down. I have two.by Diggrr - Reprappers
Excellent explanation, thank you!by Diggrr - Duet
Well the V6 uses a semitec (Marlin option 5) thermistor with a max temp setting of 285C, but since they've switched to cartridge type, are you sure you ordered the thermistor version and not the PT-100 version? (they're very similar looking).by Diggrr - Firmware - Marlin
Ah, redid it and found my error converting holding torque Nm to Ncm (190 for my NEMA 23, not 1900...oops). It now shows 42mm/s as the maximum rate to get all the categories green. Approximate peak back EMF due to rotation per motor: 23.6 V at 42.0 mm/s Approximate peak back EMF due to inductance per motor: 2.6 V at 42.0 mm/s Step pulse frequency: 26.9 kHz at 42.0 mm/s Speed at which torque startby Diggrr - Duet
Okay, so what exactly is the calculator showing me? I have to set travel at 4mm/s @ 24V/2.2A to make all the fields green in the box below, which would seem quite slow. The stepper calculator here Allaboutcircuits shows I should hit a more proper 52.5mm/s. Thank you for your time BTWby Diggrr - Duet
NEMA23 5A 3Nm. I'm building a metal cutting mill soon. Currently building a wood carving mill with 3A 1.9Nm steppers, and they should do well on my SBD109A's. It's not all about current rating though, I'd prefer to use 48V power for more accurate stepping at higher rates. Power requirements increase quickly when using meter long 16mm+ ball screws pushing a 6 Kilo gantry, and a driver-less board aby Diggrr - Duet
Good points. But buying a board with drivers is like buying shoes for the wife---money out of pocket for something I'll never use. I'll trudge along until then. Thanks much for your time!by Diggrr - Duet
While congratulations are in order for the new board release (it's good to see Duet not resting on laurels), had you given any thought to producing a CNC board? Something along the lines of screw shield with NO drivers on board, but screw connections for 4 external drivers (en/step/dir/+5v for each). 0-10v for spindle control, or even modbus and all the switch and e-stop screw connections. An RTby Diggrr - Duet
I use JB Weld (kwik weld-5 min.) for aluminum all the time. Just scuff sand both surfaces with ~80 grit, wash the debris off with dishsoap and rinse in hot water. When dry, epoxy and clamp. As for how much heat it can take: I have angle brackets glued to my hot plate in place of clips to keep the print surface in place. I've printed to 160C bed temp, and they've been stuck tight for over a yearby Diggrr - Mechanics
I did it last night. No problems, just make sure you're either using a fresh SD to play with Marlin on, or make a back-up beforehand. It was mentioned in the github thread that they're purposely not overwriting the smoothie bootloader.. And no, no luck. Azteeg X5 GT had nothing to display on the powered miniviki (previously running machine, so all is plugged in correctly). Since I have zero Devby Diggrr - Controllers
Since most hairsprays are alcohol based, I use Isopropyl Alcohol on a cotton ball--the big cotton balls for make-up removal are cheap in a huge bag.by Diggrr - Reprappers
I run a leadscrew driven i3 homebuilt. It took some work to get the openbuild's screws straight enough, but I stuck with them for the Delrin nuts. What I wasn't prepared for is artifacts coming out of the woodwork--turned out to be dirty power from the mains, and an Islatrol filter solved it...never saw such a thing with the belt driven machine using the same board/drivers/Meanwell (24V). With 8xby Diggrr - Mechanics
I bought mine from that eBay link, but they have a web-store also (and they're cheaper there too, cutting out eBay). Nice looking like in the eBay pic...well done.by Diggrr - Reprappers
Man, I wish I could.. Due/Radds it is, I just have to order steppers drivers yet...I have a NEMA23 in the mix and need a few more amps. Thanks, hell-bent on giving your work a shot.by Diggrr - Firmware - experimental, borrowed, and future