The entire team at LumiFold labs would like to thank all of our IndieGoGo supporters for your generosity. Your donations at all levels provide us with strong evidence that there is community support and desire for a portable, affordable and easy to use 3D printer. We put in the countless hours work because of your motivation. We surpassed our IndieGoGo target because of YOU!
The IndieGoGo Contributors list is now posted in the
section on our website. Names are listed alphabetically. If you have changed your mind about wanting to have your name publicly listed or wish to change how your name is displayed, please contact us by emailing info[at]dmindustries[dot]com.
To continue to receive updates on the LumiFold Development, please subscribe to our newsletter by submitting your email on our website, like us on
, and follow us on
.
Stay tuned, LumiFold users will be supported on website, and this is just the begin of a 3D printing revolution!
Thanks again!
The LumiFold team
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The Hardware and Software are provided to the User (Licensee) "AS IS." LumiFold team, and LumiFold team suppliers or affiliates, make no warranty as to its use or performance. LumiFold team, and LumiFold team AFFILIATES, MAKE NO
WARRANTIES, CONDITIONS, REPRESENTATIONS, OR TERMS (EXPRESS OR IMPLIED WHETHER BY STATUTE, COMMON
LAW, CUSTOM, USAGE, OR OTHERWISE) AS TO ANY MATTER INCLUDING WITHOUT LIMITATION NON-INFRINGEMENT
OF THIRD PARTY RIGHTS, MERCHANTABILITY, INTEGRATION, SATISFACTORY QUALITY, OR FITNESS FOR ANY
PARTICULAR PURPOSE, EXCEPT FOR, AND TO THE EXTENT, THAT A WARRANTY MAY NOT BE EXCLUDED OR LIMITED BY
APPLICABLE LAW IN LICENSEE'S JURISDICTION.
Limitation of Liability
IN NO EVENT WILL LumiFold team, OR LumiFold team AFFILIATES, BE LIABLE TO LICENSEE FOR ANY DAMAGES,
CLAIMS, OR COSTS WHATSOEVER, OR FOR ANY CONSEQUENTIAL, INDIRECT, INCIDENTAL DAMAGES, OR ANY LOST
PROFITS OR LOST SAVINGS, EVEN IF A REPRESENTATIVE OF LumiFold team OR ONE OF LumiFold team AFFILIATES HAS
BEEN ADVISED OF THE POSSIBILITY OF SUCH LOSS, DAMAGES, CLAIMS, OR COSTS, OR FOR ANY CLAIM BY ANY THIRD
PARTY. THESE LIMITATIONS AND EXCLUSIONS APPLY TO THE EXTENT PERMITTED BY APPLICABLE LAW IN LICENSEE'S
JURISDICTION. THE AGGREGATE LIABILITY OF LumiFold team, AND LumiFold team AFFILIATES, UNDER OR IN
CONNECTION WITH THIS EULA, SHALL BE LIMITED TO THE AMOUNT PAID FOR THE LICENSED SOFTWARE, IF ANY.
The Licensed Software and Hardware that Licensee receives with this EULA is pre-commercial or "BETA" software and hardware.
Licensee acknowledges that the Pre-release Software does not represent the final product from LumiFold team, and may contain bugs, errors, and other problems that could cause system or other failures and data loss.
Consequently, LumiFold team disclaims any warranty or liability obligations to Licensee of any kind whatsoever.
Licensee acknowledges that LumiFold team has not promised or guaranteed to Licensee that the Pre-release Software will be announced or made available to anyone in the future, and that LumiFold team has no express or implied obligation to Licensee to announce or introduce the Pre-release Software. LumiFold team may decide not to introduce a product similar to, or compatible with, the Pre-release Software. Accordingly, Licensee acknowledges that any research or development that Licensee performs regarding the Pre-release Software, or any product associated with the Pre-release Software, is done entirely at Licensee's own risk.
During the term of this EULA, if requested by LumiFold team, Licensee will provide feedback to LumiFold team regarding testing and use of the Pre-release Software, including error or bug reports.
The exclusions of warranties, indemnification obligations and liability limitations shall survive the termination of this
EULA, however caused; but this survival shall not imply or create any continued right to use the Licensed Software after termination of this EULA.
Complete Agreement
This EULA constitutes the entire agreement between the Licensee and LumiFold team relating to the Licensed
Software, and it supersedes all prior or contemporaneous representations, discussions, undertakings, communications, agreements, arrangements, advertisements, and understandings regulating to the Licensed
Software.
No failure or delay by LumiFold team in exercising its rights or remedies shall operate as a waiver unless made by specific written notice. No single or partial exercise of any right or remedy of LumiFold team shall operate as a waiver or preclude any other, or further, exercise of that, or any other right, or remedy.
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The original idea was to create a 3d printed unlike any other: portablefoldable, low cost and suitable for everyone, and with a simple mechanics.
The first prototype was built at the Maker Faire in Rome. With the resin contained in a plastic cup, the plate and handle of the printer made rough plywood, and the print area quite small the printer was quite raw but perfectly functional and received tremendous enthusiasm by the Makers community and of visitors and fans. It was this that convinced us to take the project forward.
Figura 1: one of the first 3d printed parts
Figura 2: the first prototipe
At the same time we started a crowdfunding campaign to test the idea at a competive level and bring it into your homes.
Figura 3: LumiFold at the Maker Faire, Rome, Italy
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The crowdfunding campaign ended with a total revenue of $ 15,000 and 40 contributors waiting to receive their printer. For the launch of the first version the campaign was limited to a small quantity of printers.
Therefore we had to give up a complete industrialization, with the manufacture of plastic parts via injection, since such customs orders with these techniques would have alone exceed the total budget of the campaign. So we opted for a semi industrialization.
The first attempt at the creation of printer components was through through sintering, which was then made a silicone mold in which liquid resin was injected to form the piece.
Unfortunately this method proved to be unsuitable to craft large quantities of parts, since the silicone molds deteriorated rapidly and the quality of the pieces was not constant.
The strategy we lastly chose was cutting the aluminum and plexiglass plates using a CNC machine and subsequently finishing and assemblying them by hand.
This phase was personally supervised by the team; its completion took longer than initially planned and was the cause of the slip of delivery times.
What has changed from the prototype to the final version:
- From Mdf to High Quality Plexiglass;
- Budget linear bearings replaced and integrated in the plexiglass structure;
- UV Sensor removed: it has proved to have not enough sensibility to accurate check how much UV the projector was emitting; moreover, it has proved that total Lumen output was a much reliable way to adjust printing times with the Spot-A materials resin we tested, that cures in wavelengths between the visible and
UV;
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Parts list :
1.
Arduino Compatible Board
2.
Motorboard Shield
3.
DC jack
4.
Top cover
5.
Carriage
6.
Motor
7.
Threaded Bar
8.
Motor-Threaded Bar Joint
9.
USB
10.
Handle
System requirements

PC Windows XP, 7, 8

1 free USB2/3 port

OpenGL compatible graphics card.

VGA /HDMI port

Dlp projector, with minimum advised power of 2600 lumen, 1024 x 768
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The main limit of this version of LumiFold is the projection method. While this kind of setup allows the printer design to be kept simple, reduce costs and avoid problems such as the object sticking to the container, "deep vat " also involves a significant disadvantage , as shown in the figure on the left. At the top is shown the projector and in yellow the path of the light solidifying the various layers. In this example we see that the object is formed on the truck ( in gray) that gradually immerses in the liquid resin and is created from its base to the top. If the resin used is transparent or semi transparent part of the light that forms the blue layer continues its path and goes to add material around the layers already formed below (shown in red) . This incidental solidification lowers the print quality, especially in the presence of straight angles and the frontal part of the object, facing the projector, is usually the most affected.
It is an intrinsic limit of the projection system chosen , but there are several ways to prevent or limit the occurrence of this problem:
- Print 3D objects where the top is narrower than the base (ie a pyramid )
- Rotate the object 180 ° before slicing in order to keep the side with the most details on the back and less exposed to the problem .
- Print hollow objects . The LumiFold Slicer provides for the generation of hollow layers , of variable thickness. This option is the most recommended as it greatly reduces the problemand also lowers the amount of resin used , making the object lighter as well.
Figura 4 : Partial Yoda bust highlighting the issue
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The software includes two softwares:
-Slicer: loads an STL file and performs slicing, saving each layer in a .png file and a summary in a .lum file;
-Former, which loads the .lum and coordinates the printer with the projector.
Setup
Download from http://www.dm-industries.com/downloads.html the file slicer installer v1.zip. It contains two files, the Freesteel installer and the executable of the Slicer. Extract the zip, and install Freesteel
(slice_installer). When finished run the program Lumifold slicer. Specify the installation directory Freesteel.
The Slicer
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Load: Load a .stl file.
Check: Checks the .stl integrity; this step should be performed before executing the slicing.
Slice: Performs the model slicing and generates the layer images in .png formart and recap .lum.
Exit: Exits the program.
Output filename: Specify the output folder and layer file names.
Image scaling mulitplier: Adjust the projected image size.
Core/ background /cavity: Colors assigned to the light intensity (black none, white maximum).
Directory of freesteel: Freesteel installation foder.
Layer thickness: Layer thickness value (0.025-0.1).
Shell: If ticked the object will be made hollow with the specified edges thickness.
Show mesh: Shows the object model on the grid.
Status Bar: Information on the slicing progress.
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The Former Window
The Projection Window
Connect: Check connection and select the printer USB port.
Start printing: Begin 3d printing the part.
Load: Load a.lum file.
Exit: close the program.
Layer curing time: Layer curing time in msec.
Total layers count: when loading a .lum file should automatically show total layer count.
Layer height: when loading a .lum file should automatically show layer thickness, usually 0.1 - 0.05 - 0.025
Move Z plate: test the plate movement
First 4 layer 6x: if your 3d part has not a wide base, this helps the object adhere to the plate
Filename: shows the filename of the .png layers that will be loaded.
Show layer “x”: before putting the resin in the vat, you can use this to check if layer is projected correctly.
SlideBar X, Y: you can move the projected layer horizontally and vertically.
Check Layers: check before printing if all layers have been generated correctly.
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Hide image: turns black the projector image, so you can place the printer with the resin without exposing it to the light.
Be sure to have your PC connected to power source, and disable Screensaver and power management.
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For the standard configuration:
Use a dark room, preferably with no lights and no direct sunlight; if you have requested it, use the UV box to shield the resin further.
Depending on the size of the object to be printed choose the larger or smaller container, and screw fit the aluminum plate of corresponding size on the carriage.
Place the projector on a tripod vertically and connect it to your PC. Use the function “Extend your desktop”.
Connect the printer to the power and check the LED light (either red or green) in the upper left corner of the printer base, then connect it to your PC with the included USB cable and place it under the projector .
Before pouring the resin, move the carriage up rotating the cylinder below it until it is at the maximum height of the object.
Fill the box with resin to cover the height of the model that you want to print, plus a half cm.
Be careful not to expose the resin to direct sunlight and any amount of light brighter than that emitted by a
60W bulb.
Turn on the projector, set the desktop display on two screens (extended desktop) and adjust the focus on the top edge of the aluminum plate.
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To perform the first calibration of the X, Y axis open the reference file "cube10mm" in the Slicer. Execute the slicing and save it as cuberef.lum. Then open it with Former and press the button "Show Layer 0".
Move the projector window on the secondary monitor (the projectors). Use the grid engraved on the aluminum plate to check that the projected 1cm square is of the right size. For corrections, raise or lower the projector, or change the image scaling multiplier in Slicer and reload the file.
Start the program and load the .lum file of your object and adjust the curing time depending on the projector according to the following table:
ANSI Lumen Curing time
2000 Lumen  8 Seconds
2600 lumen  5-6 Seconds
3000 lumen  3-4 Seconds
It is recommended to print objects made hollow with the Slicer (ticking
"Shell").
After uploading the .lum file check that all the layers have been generated correctly.
To do this, press the "Check layers" to the right under the model preview.
Sometimes the Freesteel slicer (on which the utility LumiFold Slicer is based on) cannot successfully create a layer, especially in the case of complex objects. However, image files are generated by layer, and can be changed with any image editor, keeping the name of the file progressive.
A possible solution in the case of a missing layer is to copy and rename the image file of the next layer, changing the suffix to properly maintain the numerical order of the layers.
If you are printing solid objects, to avoid the intensity of the light bending the very first layers , use an image editor to halve their brightness (only the first 4-5 will require this step) filling the white portions with 50% gray, making sure to keep the white edges.
With the printer connected to the PC, press the Connect button. If it is not recognized (no USB port is listed), close the program, unplug the cable and restart the program.
When successful the Connect icon will show the cables connected. Check that the layer height is set correctly and that the curing time is correct. Press Start Printing.
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In the packaging are included:

LumiFold;

Big silver plate;

Small silver plate;

Power Supply EU /UK /US;

USB Cable;

Screws for the aluminum carriage;

Big resin container;

Small resin container;

Small hex screw for the shaft coupler;
Resin is not included in the box.
We recommend Spot-A materials resins and their standard multi-purpose Spot-GP version. This a clear, transparent resin, that you can color adding 0.5% in weight of one of their pigments (yellow, amber and black work better).
You can also use their Spot-GP for B9 creator but has very long curing times and is not recommended.
This resin is pre-mixed with a yellow dye and is almost opaque. This resin has a curing time that is twice the curing time of the Spot-GP and is recommended only with projectors >2500 lumen.
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If the power up LED does not light: Open the base sliding the upper part horizontally and check the cable connection between the power socket and the board (grey cable).
The carriage does not move, or moves with difficulty:
- Apply WD40 on the 2 smooth bars and grease to the threaded bar
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Freesteel slicer utlility http://www.freesteel.co.uk/wpblog/slicer/
Icons
Creative Commons – Attribution (CC BY 3.0) - Upload designed by Alexander Bickov from the Noun Project
Creative Commons – Attribution (CC BY 3.0) - Blood Test designed by hunotika from the Noun Project
Creative Commons – Attribution (CC BY 3.0) - Exit designed by Luis Prado from the Noun Project
Creative Commons – Attribution (CC BY 3.0) - Utility Knife designed by Iain Hector from the Noun Project
Creative Commons – Attribution (CC BY 3.0) - Plug-In designed by Florian Huber from the Noun Project
Creative Commons – Attribution (CC BY 3.0) - Create Database designed by Ilsur Aptukov from the Noun
Project
Kitchen Teapot Icon: http://www.visualpharm.com
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