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People building or using RepRaps.
Re: Feature Request: Holes in support material - 12 years ago
Less material used on support is always good.by Dale Dunn - Slic3r
Re: double x and y axis - 12 years ago
With a moving bed 4x the size of an ordinary size Mendel, All your accelerations will have to be 1/4 what they are for an ordinary Mendel. That will result in a big speed hit. You might prefer the results of scaling up something like Tantillus.by Dale Dunn - General
Re: Modifying Z axis - 12 years ago
Can you explain? Why not a tall version of Printrbot or Prusa i3? Are you thinking of tall prints tearing themselves from the moving Y platform?by Dale Dunn - General Mendel Topics
Re: What do you do with your printer?
- 12 years ago
Printer parts. A plant pot for my wife. More of a tray really, but it was by far the largest thing I've printed. It barely fit inside 200 x 200. A few random brackets for things on the motorcycle. An adjustable rig for a laser scanner. Phone stands. Other things I've forgotten. It's mostly a tool for me.Sometimes it sits unused for months. Sometimes I'm busy with it for a few weeks. Every time Iby Dale Dunn - General
Re: Using round trapezium nuts (why are they round?) - 12 years ago
I suppose they are round so they can be rotated to the desired starting position on the screw and then pinned or clamped in place. I suppose you could print a convenient shape you'd rather have and press the nuts into that.by Dale Dunn - General Mendel Topics
Re: CNC Filament Winding Machine - 12 years ago
Neat project! Do you have a need for custom-wound tubes, or are you mainly interested in the process?by Dale Dunn - CNC Routers, Mills, and Hybrid RepRapping
Re: parametricparts.com: STEP mashups. - 12 years ago
Invalid security certificate on your site.by Dale Dunn - Experimental
Re: Resons behind filament sizes? - 12 years ago
... > Why not 1/16 or 5/64? Because those are horrible units, to be fought at every turn.by Dale Dunn - General
Re: silly CAD software questions - 12 years ago
... > Am I reading this right.. > If I don't pay for a yearly subscription (extra > $100) I don't get bug fixes, updates? Probably. That's how most of the CAD industry funds future development. And of course profits. Alibre has been around long enough that it should be pretty mature and complete code. For a hobbyist, I'd recommend skipping the subscription. Wait for enough changes toby Dale Dunn - General
Re: Dual Extruder Weight - 12 years ago
It will work, it just won't be able to accelerate as hard as lighter print heads in the same machine. There are a number of ways to compensate with belt arrangements or higher voltage to the steppers. That sort of thing.by Dale Dunn - General
Re: Mendel - X-ends upside down? - 12 years ago
Since you'll be taking it apart, how about designing some vertices that move the frame out of the way?by Dale Dunn - General
Re: Mendel - X-ends upside down? - 12 years ago
Your find on Thingiverse may be what I was remembering. I couldn't find it on G+. I would definitely recommend getting it working in the normal configuration first, so you can make parts to experiment on. You could even just abandon the MG carriage for a Prusa i3 carriage and x axis. Or design something that works the way you want. Once the printer is working, the possibilities are nearly endlesby Dale Dunn - General
Re: Layer Consistancy - 12 years ago
I thought those looked familiar. I see your machine assembles from 90° in the other direction. A change that small made that much difference. Interesting.by Dale Dunn - General
Re: Repemaker - new replicant 3d printer developing - 12 years ago
Nice! I think I would have to cut some windows in it. Are there 3 Z axis screws? I can only see 2, and that seems unstable.by Dale Dunn - Developers
Re: Layer Consistancy - 12 years ago
akhlut Wrote: ------------------------------------------------------- > OK. > > I changed the Z-steps in firmware from > 2035.5809493712193 to 2035.6 > > 2 prints > > Same Gcode > > No mechanical changes, 1/4" ACME screws > > Same plastic > > I think the image below speaks for itself. > > If you had asked me what changed between those tby Dale Dunn - General
Re: Designing my own new printer - 12 years ago
Look into Alibre for a cheap parametric modeler. There should be good learning resources for that. CAD is not something you pick up instantly. Do not start out trying to design something. Do all the tutorials and training exercises available before trying to get work done. After that, your first few projects will still be a little frustrating, and poorly organized. After that, you will have someby Dale Dunn - General
Re: Mendel - X-ends upside down? - 12 years ago
Someone posted pics of it on G+ a few weeks ago. Yes, it works fine. First printer? Make sure to build it so your Z axis screws can wobble all they want.by Dale Dunn - General
Re: Design Strategy Tutorials - 12 years ago
This is a potentially enormous topic. I've been working in my system of choice for a dozen years, but I'm still working out better and better ways of using it. Apart from copious bitter experience, it's hard to be specific without knowing what kind of CAD you're using (may not need to know which brand) and what kind of models you hope to make. Organic shapes in SolidWorks requires very differentby Dale Dunn - 3D Design tools
Re: Calibration - 12 years ago
Not nearly enough plastic in that cube. Is the extruder steps/mm calibrated to your filament in your extruder?by Dale Dunn - Printing
Re: New here confused on what CAD package to use. - 13 years ago
fsamir Wrote: ------------------------------------------------------- > $49 bucks seems very attractive, unfortunatelly it > doesn't run on Macos. Seriously, what good CAD does?by Dale Dunn - 3D Design tools
Re: DAVID-Laserscanner - 13 years ago
I may be able to get my wife to split the cost on a fully functional unit. These things seem too useful to dedicate solely to scanning, and she may be tired of sharing her laptop screen for small presentations she sometimes does. I'll have to do some further reading to see what characteristics other than cost are important. Thanks for the help. So much to do still...by Dale Dunn - 3D Scanners, Book Scanners, and Optics
Re: DAVID-Laserscanner - 13 years ago
Laser line. The motorized stage is definitely looking like a good idea. There are also the problems of managing lighting and camera settings to get better recognition of the laser line (a focused laser line is still fuzzy if overexposed. I've taken to using just the end of the line, where it's dimmer). For the cost of building the stage plus the reduced learning curve, I'm starting to think alrby Dale Dunn - 3D Scanners, Book Scanners, and Optics
Re: Random Movement - 13 years ago
Does the gcode look correct in Pronterface? Does the machine always move correctly when moved manually from Pronterface? Everything is calibrated and homes correctly?by Dale Dunn - Printing
Re: DAVID-Laserscanner - 13 years ago
OK, the DAVID laser scanner arrived this week. I can confirm there is a steepish learning curve. I'm getting results, but I know better is possible.by Dale Dunn - 3D Scanners, Book Scanners, and Optics
Re: Random Movement - 13 years ago
Are there little pauses between the random moves? That would suggest too much current in the stepper drivers. If they overheat, they shut down until they cool again. That can happen in less than a second, causing several moves to be skipped.by Dale Dunn - Printing
Re: Tame your spool with a little heat - 13 years ago
Other things about my setup that may be relevant to preventing this (I don't have the problem): -1.75mm filament. -The spool is not on bearings, so there is drag to resist unwinding. -The filament passes through a guide within about 50mm of the spool, so it can't get far enough from the spool to fall off. -I use a Bowden tube between the spool and the extruder (not a Bowden extruder) so the X axby Dale Dunn - General
Re: New here confused on what CAD package to use. - 13 years ago
Inventor and AutoCAD are far too expensive for hobby purposes. AutoCAD isn't even really appropriate, though it can do 3D. I use SolidWorks at work, so I get to use it for my hobby purposes too. Learn to use OpenSCAD, since it's the closest thing we have to a common CAD format. There will be downloaded parts you will want to modify, and that's the most likely format. I personally don't like it,by Dale Dunn - 3D Design tools
Re: Jerk and Acceleration in Marlin - 13 years ago
Speed is the rate of change of position. Acceleration is the rate of change of speed. Jerk is the rate of change of acceleration.by Dale Dunn - General
Re: DAVID-Laserscanner - 13 years ago
How about a link to the other forum thread, with a brief summary of the post? It'll probably load faster for us, and it's less work for you.by Dale Dunn - 3D Scanners, Book Scanners, and Optics