Try setting all your zeros with the table down, and all measurements will have reference to that point - just be sure that side of the frame is true vertical and ay 90 degrees to keep x and Y axis references true too.by Scrachbuilder - General Mendel Topics
3 point suspension can help. All measurements work from the Zero set for the X, Y and Z axis. It is on the side of the traveler nearest the zero for the respective axis, to have the two bearings; and on the farthest side to allow the single bearing room to float, preferably in the central position for the axis. For the z-axis, I have let the rails on that farthest side to float on the x-plane.by Scrachbuilder - General Mendel Topics
Has anyone found a cure for the whole frame flexing across the X-axis. The frame, by the triangular design, is rigid on the y-axis; but on the x-axis the design allows the same triangular design to flex in that x-axis direction. Panels down the Y-axis slopes would help, but they would severely limit access to the table.by Scrachbuilder - General Mendel Topics
Among Model Railroad fans there is the landmark JMRI Case, only settled in 2010.that gave Open Source protection against others patenting or copyrighting collective efforts. I am surprised Thingiverse would not let things stay as this decision went.by Scrachbuilder - General
Great idea: they are pretty tough when you need to break them!by Scrachbuilder - Mechanics
Sublime Wrote: ------------------------------------------------------- ... > > I did experience a few issues. > > 1) PLA chuck jaws can not handle the heat Shapeways print stainless steel - do you think s/s jaws would loose the heat as a heat sink with a fan on them ?by Scrachbuilder - General
Has anyone experimented with acrylic paints?by Scrachbuilder - Paste Extrusion Working Group
It is going to take time, and my suggestion is to build in affordable stages. Most of the items are available at a good hardware shop, on eBay, or in well documented instructions on this site. I am still building a bespoke machine after 3 months!by Scrachbuilder - General Mendel Topics
You must use Metric Tool Steel Tight Tolerance Rod with these bearings. (McMaster Item 88625K67 - 3' lengths) In the US McMaster-Carr on www.mcmaster.com is a good source for the Metric rod: pick a distribution point nearest you. I used eBay for the bearings, with free shipping from China/Hong Kong.by Scrachbuilder - General Mendel Topics
I built the basic frame with 5/16 because Metric is expensive in the US - 5/16 is readily available at ACE Hardware. All three moving axis are 8mm rod & threads at 1.25mm pitch. Because I have built to also use as a 3D Mill; both the x & y axis rods are 12mm with other structural changes for strengthening. I found McMaster-Carr on www.mcmaster.com in the US a good place to source Metrby Scrachbuilder - General Mendel Topics
Has anyone had experience of designing a plotter head to print acrylic paints.by Scrachbuilder - Developers
I would like to add to this:- Has anyone designed a head that will print/plot with a lacquer paint?by Scrachbuilder - 3D Design tools
Make yourself a bow, with a loop around the pin vice, and a palm piece for light pressure..by Scrachbuilder - General
re, Mendel90_hot_end.png I think if the heating core was tapped for M6, then it could be located nearer the nozzle, and only one M6 locking nut would be needed against the top; with maybe a serrated washer to lock against effects of highs/lows in temperatures. Also, a more balanced core around the nozzle would make for more even heat distribution with a second thermistor.by Scrachbuilder - General
Excellent example of recycling newsprint and milk bottles.by Scrachbuilder - General
Sounds like a "Me too" situation. 1/3 off soon gets lost when he needs to expand. Where is the unique offering if it is the same?by Scrachbuilder - General
Don't like the root design philosophy of the Miter Saw Bench at the top. There is moment on having only one single 2x6 between the Stand's legs.by Scrachbuilder - General
If it is wood, the best method would be extrusion, with robot factory assembly for the major parts of the structure.by Scrachbuilder - General
On Youtube there are examples of machines already printing complicated 3D concrete designs for construction projects.by Scrachbuilder - General
There are larger and longer heated beds now available on eBay.by Scrachbuilder - General
The initial design is 5/16- 8mm rods. To build bigger there will be problems of flexing which, as previously posted, will distort printing. I have used the injection molded vertices - available on eBay. I am building to take a small router for milling model engineering, and on both the x and y axis have increased the rods to 12mm. The top brackets have aluminum outriggers at 7cms for router hby Scrachbuilder - General
Is it a fixed font selection, or can you create your own?by Scrachbuilder - 3D Design tools
I see Mach3 G-code has 3 decimal points of accuracy in the co-ordinates. Is this translated o'k by the Reprap Drivers?by Scrachbuilder - Mach3
Is there anyone with experience getting raised script into 3D?by Scrachbuilder - 3D Design tools
I started with injection moulded ABS parts for the 6 vertex pieces. In the design, they appear to be the key parts for rigidity of the basic supporting framework.by Scrachbuilder - Casting and Moldmaking Working Group
For strength, I would like to see solid webs joining each pair of the opposing rods.by Scrachbuilder - Casting and Moldmaking Working Group
I agree with "edjuh" ::- The basic design is open to all to copy, and it is very much an exercise in collecting the various pieces, to make a machine that is uniquely your own. The contributions of those shareing their experiences is important to the process of building the ultimate machine.by Scrachbuilder - General
When so much is Open Source, a Mach3 license for $150 does not sound too bad.by Scrachbuilder - Mach3
nophead Wrote: ------------------------------------------------------- > I don't know anything about the PrintrBoard but > having preloaded firmware is not really a selling > point. It has to be configured for the actual > machine, so you need to learn how to compile and > load the firmware yourself. I think this is a bit of a misnoma. The board comes with firmware preloaded andby Scrachbuilder - Controllers
Andrew: Thanks: It is the mintemp error message. The notes within the config file say - // The minimal temperature defines the temperature below which the heater will not be enabled // It is used to check that the wiring to the thermistor is not broken. // Otherwise this would lead to the heater being powered on all the time. That being so, while the max_temp is set to 250 to shut down, I thby Scrachbuilder - Reprappers