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Rostock, Kossel, Simpson, 3DR, and more. See: http://reprap.org/wiki/Category:Delta. Previously named "Delta Robots and Stewart Platform"
Re: Turning up Power Supply voltage with Duet Controller? - 9 years ago
yes, it is insulated with corkboard. I am using a standard MK3 circuit board heater with aluminum heat spreader attached. Not sure how many amps this bed draws when overvolted. Any calculation I can use???? I will also be increasing the potential wattage of the ceramic extruder heater.....by patrickrio - General
Re: Maximum angle for arms? Is it actually 90 degrees??? - 9 years ago
OK, I think I can picture how to get equal arms shorter by extending past 90 degrees... However I am a ways past the age I studied geometry, so doing a geometry proof is beyond my current ability. But you would essentially have the joints on the carriages extend inward so the arms can swing past 90 without the effector hitting the vertical guides, rods or belts. Stiffness of the mounting pointsby patrickrio - Delta Machines
Turning up Power Supply voltage with Duet Controller? - 9 years ago
Hi, I have a 24v 15a LED power supply running my CoreXY printer with a Duet controller. The best my heated bed can do for temperature is 80c and it takes forever to get there. Someone suggested turning up the power supply to give the bed more oomf. I believe that the Duet can handle up to 38v. I just want to make sure that there are no surprises if I increase the voltage. I have very heavy dutby patrickrio - General
Re: Maximum angle for arms? Is it actually 90 degrees??? - 9 years ago
that is what I thought.... Wanted to make sure that there wasn't some unknown issue I did not know about.... Actually, thinking about the geometry, since all 6 arms are equal length, and since you want the shortest length of arms, 90 degrees is the angle that minimizes arm length for a given print diameter and effector size.by patrickrio - Delta Machines
Maximum angle for arms? Is it actually 90 degrees??? - 9 years ago
Hi, I know the minimum angle recommended is 20 degrees, maybe 15 degrees at the outside. For the highest angle, I have seen "nearly 90 degrees" but have not seen an actual recommended number. Is it actually 90 degrees or is it something like 85 degrees???? I am about to finalize my arm lengths and distances between linear guides, so I need to know this now... Thanks!!!by patrickrio - Delta Machines
Re: "Candy Apple" printer first pic and video - 9 years ago
Here is a drawing of the belt paths... sorry for it being hand drawn, but it was much faster than using the computer to make the drawing.....by patrickrio - CoreXY Machines
Re: List of Small 3D Printers - 9 years ago
Here is a picture of one of the connections between the x and y carriages as promised....by patrickrio - General
Re: CoreXY vs Quadrap mechanism - 9 years ago
Yes, that is the procedure for getting parallel.... however, some of the manufacturers feel pretty strongly that this is not enough to meet spec. a few of the manufacturers, IKO for example, will not even honor the warranty on their smaller sealed guides if you do not have a mounting lip. I believe this is up to their 12mm rail miniature sealed guides. I did not have a lip on my design either, aby patrickrio - CoreXY Machines
Re: CoreXY vs Quadrap mechanism - 9 years ago
The key to good cross/twist design is to have the pulleys before and after the twist stationary. also, if you have 2 pulleys before and after stationary, you can actually vary the heights of the nearest 4 pulleys to make belt passes without touching easier....one belt can go high while one belt goes low without impact to belt tension or belt length. 6mm wide GT2 and MXL can do a 180 degree twistby patrickrio - CoreXY Machines
Re: CoreXY vs Quadrap mechanism - 9 years ago
Hi D. Dentist. I included a design feature in my printer that guaranteed equal belt tensions always. I used 1 continuous belt for both belt paths. you fix the belt ends on one side of the carriage first, and then, when you get the tension right, you just clamp the belt to the other side of the carriage to separate the single belt into 2 functional belts. This requires the belts to be on the sameby patrickrio - CoreXY Machines
Re: Different Magnetic Joint Style... Is it any good? - 9 years ago
if there is any play in the gears that develops, using them in a Z axis where you have essentially automatic backlash control via gravity may be good... and slow movements are not a problem either. They may not be good for extruders that need quick reverse control for retraction though.....by patrickrio - Delta Machines
Re: Different Magnetic Joint Style... Is it any good? - 9 years ago
Yes, I have been planning to use 24v to increase the effectiveness of cheaper/smaller steppers. I bought some of those steppers to test, but my primary plan is with a more standard Nema 14 0.9 degree stepper motor 20mm thick. The thought of using Li-Po had occurred to me, but I figured I can add those any time.... 70w of 24dc is 70w of 24dc regardless of source.... I bought some of those gearby patrickrio - Delta Machines
Re: New print surface material? - 9 years ago
I found this very thin double sided tape on amazon. handles up to 400 degrees F or 200 c which should be plenty for heated beds. only .06mm thick so it should reduce the thickness variations people are having with carpet tape....by patrickrio - General
Re: Coffeetable CoreXY:: new build :: small apartment rep-strap solutions - 9 years ago
I have both the Duet 0.6 and the SBase boards. I have mostly run the Duet, but did run the Sbase for a short period of time. I found the Sbase web interface very inferior to the web interface of the Duet. As a matter of fact, I found the Sbase web interface substantially inferior to running the Sbase with USB connection. So I only ran the Sbase via USB connection and pronterface. The web interfby patrickrio - CoreXY Machines
Re: Duet Motor loom connector???? - 9 years ago
Ahhhhh.... I just cleaned out my wiring box about a month ago... and threw out about 20 of these!!!!!! darn.by patrickrio - Controllers
Duet Motor loom connector???? - 9 years ago
I think for my mini delta printer, I want to use the single motor loom connector rather than the individual connectors on the Duet. A single motor loom will be easier to work with. dc42, do you know of a good and cheap source for an already made connector that has decent AWG ribbon wire already attached???by patrickrio - Controllers
Re: List of Small 3D Printers - 9 years ago
After Thanksgiving vacation I should be home so I can take a picture and send it. I think that connection needs some improvement in my machine.by patrickrio - General
Re: Duet: What is max rpm that a 0.9 stepper can Reliably turn? - 9 years ago
i have 15 tooth pulleys...... so 25% lower..... Does anyone have information on the maximum speed of 1.75mm filament into E3D regular and volcano nozzles?????by patrickrio - Controllers
Re: Duet: What is max rpm that a 0.9 stepper can Reliably turn? - 9 years ago
Since layer thickness, width and nozzle size can be such large variables, how about we use speed of filament into the extruder as the constant? As examples, how fast can you send filament into a normal e3d and a volcano in mm/sec for 1.75mm filament? This would be how much filament must be moved with 50kHz. Then you would just make sure your path width, height and speed mean extruding less thanby patrickrio - Controllers
Re: Different Magnetic Joint Style... Is it any good? - 9 years ago
I got some M2 rod size brass ball joints as a back up just in case. They should work fine in my small delta too.by patrickrio - Delta Machines
Duet: What is max rpm that a 0.9 stepper can Reliably turn? - 9 years ago
Creating a geared extruder design. I need to make sure I don't over gear. What is the max RPM the Duet can drive a 0.9 degree stepper without missing steps? Probably a question for dc42.........by patrickrio - Controllers
Re: Different Magnetic Joint Style... Is it any good? - 9 years ago
Paul Wanamaker and etfrench: Do you have pictures of your joints at the effector and towers so I can see how you did it? I am trying to find a very small nozzle too, which should reduce effector weight. Nozzle link I am not going to have a heated chamber so N52 magnets are fine. My motors are small 0.9 degree/400 step Nema 14 that are 20mm thick with a torque of 4.903325 Ncm (500 gm cm). Myby patrickrio - Delta Machines
Re: Looking for smallest diameter heater block.... Ideas? - 9 years ago
If the Effector stays flat, which it does, anything above or below the effector can cause the effector to be larger in width and potentially limit the print area next to the linear guides, depending on the design. Smaller width gives me a larger build area for a given frame size. If I use the same ratio of arm length to distance as your machine, I can have an effector sized as an equalateral triby patrickrio - Delta Machines
Re: Looking for smallest diameter heater block Ideas? - 9 years ago
This will be a PLA only printer, probably with rafts for larger items, so a bed heater should be unnecessary. I am also using a PEEK heatbreak with teflon liner, so cooling should be unnecessary too. That said, I DO want to find a small diameter heat block to minimize effector size. And it would be nice to know the minimum angle I should let the arms reach (15 degrees?) as well as the maximum aby patrickrio - Delta Machines
Re: Different Magnetic Joint Style... Is it any good? - 9 years ago
I have found some 3/16 inch dia 1/2 long cylinder magnets that pull nearly 3 lbs/1.4kg each just connecting to steel (non magnetic) surfaces. 1/4 inch dia magnets can hold up to 7 lbs. I just don't have an idea how much pull I need..... or how big I can go in diameter.by patrickrio - Delta Machines
Re: Looking for smallest diameter heater block Ideas? - 9 years ago
it is a VERY small printer. the print area is 100mm diameter and the arms are likely to be only about 100mm long (with effective arm length 110mm with the balls on each end.) so even 20mm distance between the arm is a 20% ratio which is high I think. I am also using the 3 ball effexor design, which lets the triangle be smaller. long and short (short) is that a smaller diameter heat block will aby patrickrio - Delta Machines
Re: THE ultimate filament survey ! - 9 years ago
So, went here to get detailed info about various types of filament. The web address for the filament list forwards to a site that collects email addresses... and then does not give you a list of filaments.by patrickrio - General
Looking for smallest diameter heater block.... Ideas? - 9 years ago
Looking to make my effexor as small as possible. since the nozzle sits in the exact center of the Effexor, I need the nozzle that will fit on the smallest triangle with the nozzle located at the center. Any Ideas????by patrickrio - Delta Machines
Re: Different Magnetic Joint Style... Is it any good? - 9 years ago
What holding force is necessary to keep everything together at high speed???? If I know the holding force necessary, I can select magnets and shaft diameter. Also, since the Balls are 10mm spheres, what is the max cylinder diameter for 2 magnets on that ball without interfering with each other???by patrickrio - Delta Machines
Different Magnetic Joint Style... Is it any good? - 9 years ago
This style of magnetic joint on the efexor is very interesting: spiderbot magnetic joints I think I might try this. Anyone have experience???? I assume I need the most powerful cylinder magnets I can find.... any type suggestions???by patrickrio - Delta Machines