http://objects.reprap.org/wiki/Shape_Deposition_Manufacturing https://reprap.org/forum/list.php?183 Sun, 19 Jul 2026 20:10:06 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?183,862648,862648#msg-862648 https://reprap.org/forum/read.php?183,862648,862648#msg-862648 [docs.google.com]

and the sensorica site:
[www.sensorica.co]
I cannot edit the sensorica document right now.

I have not been able to get on with doing any experimentation, though.

I am looking for collaborators, if you are interested and able to collaborate, please get in touch anthony.a.douglas@gmail.com]]> Adouglas89 Shape Deposition Manufacturing Working Group Sun, 17 Nov 2019 15:44:45 -0500 https://reprap.org/forum/read.php?183,858180,858180#msg-858180 https://reprap.org/forum/read.php?183,858180,858180#msg-858180 [sites.google.com]

Here is an explanatory document that I recently updated to explain the process:
[sites.google.com]

I think it is clear in this age of self driving vehicles (ups has been doing driverless deliveries for real since may), drones, smartphones, computers etc. that the on the ground manufactured reality is severely lagging. We still have very crude garments, for instance. Vehicles are not really benefiting much from the improvements in technology wrt return on investment that they present to owners. Things like that are very real. We need to achieve a higher degree of ability to manufacture things on the ground so that we can do more things much better in the same line as wikispeed and open source ecology. The barriers there have become relatively clear to me; we need a fabrication facility that is better than you can currently get by assembling any collection of milling machines, laser cutters and 3d printers and stock parts. Especially for the price i.e. it has to have a better return on investment ratio.

I think mold sdm can be the heart of such a system. Part of the heart of the revolution.

I am proposing and working on a project that is basically for Mold SDM what the Reprap was for 3d printing: Make a basic functional machine to drag the whole process and it's potential out of the shadows and into the light of day, form a community of people that understand it's value and proceed to develop the software and hardware. This will catalyze an industry around the concept much as the reprap catalyzed the 3d consumer printer phenomenon over the last 13 years to go from zero to multi billion dollar industry.

Mold sdm is a very special process because you can make truly useful things with it; it has all the precision and material properties that you need to make a ton of highly useful things, including a much larger fraction of it's own parts than a reprap can. You could make even the stepper motors if you wanted to, with only the wiring you might need to add. Even the bearings could be hydrostatic bearings, so you can even make that part. But the main thing is that you can make the most expensive and custom parts, all the mechanical structure, with hydrostatic linear bearings for excellent long life and repeatability of motion.]]> Adouglas89 Shape Deposition Manufacturing Working Group Sun, 18 Aug 2019 10:33:42 -0400 https://reprap.org/forum/read.php?183,785132,785132#msg-785132 https://reprap.org/forum/read.php?183,785132,785132#msg-785132
The bottom line is that it looks like a good, relatively easy way to reach a system that is dramatically better than any other three d printer that anyone else seems seems to be working on. In terms of the quality of the output it can produce.

To produce objects of almost any shape you can draw on the computer, to a degree of accuracy (deviation from the computer model) which is higher than or close to typical conventional milling, with smooth surfaces, with low consumables cost, low system capital, low retooling cost, which can make a large fraction of it's own parts, of fully dense high strength materials including metals perhaps steels.

This is not something I see coming from any other approach, at least not combined with the relative ease of development of sdm.

I am scheduled to get access to a house in Windsor that will be a suitable workplace.

The most critical thing to do is to develop a good set of materials with deposition and removal processes. At least one set of three materials, one as the build material, one as the support material, one as the final material which will fill the mold that was produced. They need to be millable sufficiently strong etc, and mitually compatible in the various ways during deposition and removal, e.g. they can be deposited on top of each other without remelting or whatever. Plus the deposition process has to leave low residual stress..

We will have to buy a ball screws based a desktop router with tool changer, and go through the process of developing the robot and material . Order a bunch of materials and tools to work with.

The software is one of the major challenges. The process from stl file through sli c ing/process planning to gcode. The higher level pseudo code I can see the way forwards on, but not beyond that. It doesn't require fundamental technological research, but is by no means easy. We need to make sure it is well documented and modular and with relatively transparent operation (so for troubleshooting and changing things in the field), from pseudo code through algorithms to the code commenting so we don't encounter a lot of the issues with the earlier reprap software, which was too opaque re diagnostics etc. You gotta be able to see in there, unless the developers want to be three times as thorough, so it just works, but we can't afford to be that thorough and this stage. Transparency, modularity, editable is the order of the day, I think, then. Open, indeed, extra open.

Too support this and get funding, make some videos and a crowdfunding campaign, and of course bring in more collaborators. Soon, ideally, get a better workplace.]]> Adouglas89 Shape Deposition Manufacturing Working Group Sat, 26 Aug 2017 12:32:20 -0400 https://reprap.org/forum/read.php?183,37213,37213#msg-37213 https://reprap.org/forum/read.php?183,37213,37213#msg-37213
I started up a project on Sourceforge to store all the release files. The project is labeled Hydra-MMM for Hydra Multi-headed Manufacturing Machine. Please go here to download the files: https://sourceforge.net/projects/hydra-mmm/

The entire thing has taken me about 2 weeks to write along with all my other work on the machine, but I feel it is coming along nicely. Here is some more background on the project:

Hydra is a multi-headed manufacturing machine that is originally being designed and built for ME463 (senior design) at Purdue University. The general idea is to make a personal manufacturing machine that will be able to perform multiple, simultaneous operations such as milling, additive prototyping, pcb fabrication, laser etching, etc. For the most part, current industrial workplaces have dedicated machines for each one of these functions. By having multiple independent toolheads on the machine, Hydra will be able to perform compound operations that are not possible on dedicated machines (ie FDM rapid prototyping and milling for more accurate part outlines). Hopefully the project will lead to potential discoveries of new manufacturing techniques through the use of compound operations, as well as create a very cost effective product for small business or educational institutions who cannot afford current commercial machines.

The Sourceforge project will contain the microcontroller firmware and host software for the machine. The firmware was written in the Arduino development environment (http://www.arduino.cc/) and is currently being used on an Arduino Mega microcontroller. The software is written in the Processing development environment (http://processing.org/) and is written in Java. Because of this the host software can be run on Windows, Mac OS, and Linux operating systems. The software and firmware communicate via a serial interface. Standard machine language (Gcode) as well as custom M codes are being used for communication.

Please see: [cpwebste.blogspot.com] for more information about the project




So again, I have uploaded all of the software to the sourceforge project here: https://sourceforge.net/projects/hydra-mmm/

I would love some feedback on the code as far as optimization, bugs, additional features I should add, or anything like that!]]> cpwebste Shape Deposition Manufacturing Working Group Mon, 09 Aug 2010 18:32:24 -0400 https://reprap.org/forum/read.php?183,32855,32855#msg-32855 https://reprap.org/forum/read.php?183,32855,32855#msg-32855
The FDM process would proceed as normal, however, the software would add something like 0.2mm to the outline of the part. Then once the layer has completed printing, a very fine milling head will mill the outline of the part for superior accuracy. Once it is done, the excess material will have been removed and the part dimensions will be as they were originally intended.

My question for any software gurus out there who are more familiar with the Reprap setup is how would I go about implementing this procedure into the software/firmware? I think I can handle designing and building the machine to have 2 toolheads (one for FDM and one for milling), but a simple way to add this into the software has not occured to me yet? Any ideas?]]> cpwebste Shape Deposition Manufacturing Working Group Mon, 22 Feb 2010 16:37:39 -0500 https://reprap.org/forum/read.php?183,9274,9274#msg-9274 https://reprap.org/forum/read.php?183,9274,9274#msg-9274
with my old CNC-mill i want to combine the additive fabbing of a FDM-extruder with the subtractive finishing of a CNC-mill.

In a german CNC-forum i found a simple methode for building very accurate housings and fittings - here i have some images ...

1 - build (reprap?) the inner core and finish with a mill:
[attachment 513 Airbox01.jpg]


2 - apply the material for the housing (maybe with the reprap too?):
[attachment 514 Airbox02.jpg]


3 - after curing finish the surface with the CNC-mill:
[attachment 515 Airbox03.jpg]
[attachment 516 Airbox04.jpg]


4 - separate the object from the core:
[attachment 517 Airbox05.jpg]



Viktor]]> VDX Shape Deposition Manufacturing Working Group Fri, 04 Mar 2011 16:02:06 -0500