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General discussions. For specific printers / electronics / fabrication methods / softwares, please see other sections.
Re: Millstrap requirements? - 11 years ago
Hi @WillAdams I'm looking for the same solution...hopefully someone will respond to our posts. Thanks....let me know if you find a solution.by simspeed - CNC Routers, Mills, and Hybrid RepRapping
Re: CNC Mill to Precision 3D Printer - 11 years ago
If I have a 4 or 5 axis cnc stepper motor driver controller board...what would be the interface to use an Azteeg X5 mini or PCduino3 32 bit microcontroller to run Smoothieware or LinuxCnc to run the mill as a 3d printer? Thanks...by simspeed - CNC Routers, Mills, and Hybrid RepRapping
Rotocasting motor controls - 11 years ago
I'm about to begin fabrication of a rotocasting machine that I designed to build parts for a new 3d printer. I've been looking around the web to see what types of motors and controls others have used for similar projects. Has anyone here used a variable speed DC motor and controls for something like this? If so, what can you recommend that will do the job for reasonable costs? Thanks...TPby simspeed - Casting and Moldmaking Working Group
Re: LISA Simpson - 11 years ago
Here is a printed slew bearing that you might be interested in Nicholas....by simspeed - Delta Machines
Re: CoreXZ - 11 years ago
Very interesting and apparently very practical Nicholas. Please put me down for one of the first kits when you decide to offer them.... I'd take one tomorrow if it was available.by simspeed - Developers
Re: Delta Scara - 3D printer design - 11 years ago
Yea, that's the kind of pivot I had in mind. I've drawn this up using a plate clamp like we see on old style auto distributors. I like this application...I think the pulleys can be sized even smaller in diameter than shown depending on the final drive ratio.by simspeed - Polar Machines, SCARA, Robot Arms
Re: Delta Scara - 3D printer design - 11 years ago
Yes, the extruder will rotate on it's vertical axis so the pull of the filament would always point straight back to the guide. I agree there will be a need to control line slack...have to think how best to work that out. Considering the side entry to the extruder, I better construct a prototype and test before committing to the larger design. All good points see3d...thanks. Very helpful to geby simspeed - Polar Machines, SCARA, Robot Arms
Re: Delta Scara - 3D printer design - 11 years ago
Well that's one place where you have the advantage on me see3d....I have yet to own a 3d printer and do not have your experience with such things. I expected the filament to physically behave much like the plastic line I use with my string trimmer. I did not realize print filament behaves differently. I guess I better order a spool to observe the properties before I commit to those aspects ofby simspeed - Polar Machines, SCARA, Robot Arms
Re: Delta Scara - 3D printer design - 11 years ago
Yes indeed on the filament path. Something like what I've shown in this drawing should work. Especially since the hot end and extruder swivel on bearings at the arm end. The pull of the filament should always keep the extruder end pointed in the direction of the feeding spool if we leave enough play in the hot end power line connections. These printed plastic guides could be mounted below eacby simspeed - Polar Machines, SCARA, Robot Arms
Re: Delta Scara - 3D printer design - 11 years ago
Yes...right again on the motor location A2. However I've just changed the arms up to follow a suggestion Nicholas made to an email question I had posed to him earlier. These drawings show the new arm center mount that reduces the weight and mechanical force on the frame and steppers. The added tube supports also helps to brace the top of the frame. Nicholas also said the drive ratios should bby simspeed - Polar Machines, SCARA, Robot Arms
Re: Delta Scara - 3D printer design - 11 years ago
Thanks A2. I think you mean something like this for the elbow motor/pulley and lengthen the elbow neck tube to separate the bearings. I think the bed slider needs the stiff CF tubes for strength, weight savings and cost of the build. They're really not very expensive in relation to what a big plate of aluminum would cost for material and fabrication. They would all be epoxied in place so theby simspeed - Polar Machines, SCARA, Robot Arms
Re: Delta Scara - 3D printer design - 11 years ago
This is an illustration of the Z axis mechanism with a counterweight incorporated to offset the bed slider assembly. The slider itself will remain somewhat heavier than the counterweight so that gravity loading of the slider will maintain position controlled by the stepper string reel centered under the bed.by simspeed - Polar Machines, SCARA, Robot Arms
Re: Delta Scara - 3D printer design - 11 years ago
Hi see3d...thanks for your comment. Excellent suggestion. I did not really consider that, but of course you are right. The issue with mounting that motor relates in this design to the total height and the final drive ratio of the lower arm. I can mount the motor and drive higher and swing it back 180 degrees toward the pivot post, but that necessitates raising the alum. bracing and the spoolsby simspeed - Polar Machines, SCARA, Robot Arms
Delta Scara - 3D printer design - 11 years ago
Hello to the forum... I've been working to design a large print volume 3D printer based on a Delta frame platform. I've progressed through numerous ideas and iterations for the three axis movements and believe I've settled on the following shown here. I've bounced ideas off Nicholas Seward and he's been more than gracious with his time and advice. I've decided to post these drawings of the laby simspeed - Polar Machines, SCARA, Robot Arms
Re: RadRacer builds a "BerryBot3D" - 11 years ago
Hi Wayne.... Would you mind giving use the cut length of the MakeSlide Rails you used? I have the MakeSlide rails in this drawing scaled to 1450mm from the platen to the top plate. The rails come in 1000 and 1800mm lengths. Advice on the proper length here and for the parallel arms would be greatly appreciated. Thanks...TPby simspeed - General
Re: 14" Silicone Heat Bed - 110v with Digital Controller/Display - 11 years ago
I think the "standard" U.S. UL rated plug as depicted in the drawing will adequately handle the max 1500w/ 110v/ 13 amp output for this device. That rating and load is typical of numerous electrical appliances such as hand blow dryers. The controller/display and components are UL rated and the silicone heater assembly is CE rated. The intent here is to offer something that I am commissioning fby simspeed - Delta Machines
14" Silicone Heat Bed - 110v with Digital Controller/Display - 11 years ago
Hello to the group. I am assembling components for a Berrybot 3D clone with a 14" print bed for my business use. In that process I've researched different types of bed heaters and found a source that will build high temperature silicone pad heaters for me in 355mm (14" approx. ) and 275mm (11" approx.) round pads. I've spec'd these for 110v power and digital temp controller/ LED displays fby simspeed - Delta Machines
Re: RadRacer builds a "BerryBot3D" - 11 years ago
Hi Wayne....great thread! I have a question concerning the electronics and firmware package you used to run the machine prints. What are you using (board, components, wiring diagram, firmware)....and where did you buy them. I don't recall reading here or on Werners videos much at all about the control systems. I'd certainly like your input on this. Thanks...TPby simspeed - General