Lean/Six Sigma Approach to 3D printing (guide under construction) September 19, 2014 05:09AM |
Registered: 9 years ago Posts: 7 |
Link to WikipediaQuote
Lean manufacturing, Lean Enterprise, or lean production, often simply, "lean", is a production philosophy that considers the expenditure of resources in any aspect other than the direct creation of value for the end customer to be wasteful, and thus a target for elimination. Working from the perspective of the client who consumes a product or service, "value" is any action or process that a customer would be willing to pay for.
Link to WikipediaQuote
Six Sigma seeks to improve the quality of process outputs by identifying and removing the causes of defects (errors) and minimizing variability in manufacturing and business processes. It uses a set of quality management methods, including statistical methods, and creates a special infrastructure of people within the organization ("Champions", "Black Belts", "Green Belts", "Yellow Belts", etc.) who are experts in these methods. Each Six Sigma project carried out within an organization follows a defined sequence of steps and has quantified value targets, for example: reduce process cycle time, reduce pollution, reduce costs, increase customer satisfaction, and increase profits. These are also core to principles of Total Quality Management (TQM) as described by Peter Drucker and Tom Peters (particularly in his book "In Search of Excellence" in which he refers to the Motorola six sigma principles).
Re: Information request, Experiences and Data about FFF/FMD printers September 19, 2014 03:34PM |
Registered: 11 years ago Posts: 471 |
Re: Information request, Experiences and Data about FFF/FMD printers September 19, 2014 04:15PM |
Registered: 10 years ago Posts: 48 |
Re: Information request, Experiences and Data about FFF/FMD printers September 19, 2014 04:27PM |
Registered: 9 years ago Posts: 7 |
Re: Information request, Experiences and Data about FFF/FMD printers September 19, 2014 04:29PM |
Registered: 9 years ago Posts: 7 |
Re: Information request, Experiences and Data about FFF/FMD printers September 19, 2014 05:32PM |
Registered: 9 years ago Posts: 7 |
Re: Lean/Six Sigma Approach to 3D printing (guide under construction) September 21, 2014 10:24AM |
Registered: 10 years ago Posts: 67 |
Re: Lean/Six Sigma Approach to 3D printing (guide under construction) September 21, 2014 12:05PM |
Registered: 9 years ago Posts: 7 |
Quote
Material
- Material type
- Diameter (deviation)
- humidity (amount of vapor absorbed by material)
- Age (older filament can be brittle or have high humidity)
- Color (different colors need different temperatures)
- Impure material (recycled junk)
- Bends and kinks
- lint/dirt on the outside that does not get cleaned off before it is spooled.
Enviroment
- Temperature (enviroment/nozzle/bed)
- Enviromental temperature deviation (big difference with buildplate/extruder temperature
can give problems, as well as changing temperature during printing. This can be caused for
example by walking past the printer, open windows, airco etc)
- Moving the printer ( for example by bumping onto it)
- Surge (sudden increase/decrease power supply voltage)
- Insulation: Enclosures for main frame, insulation for hotend, insulation for heatbed.
Equipment
- loose screws
- Loose belts
- Play/flexibility in mechanical printer parts
- inaccurate buildplate setup (paralellism to XY plane)
- Wrong step/distance setup (1mm ≠ 1mm)
- Wrong sepper driver setup
- Squareness of printer
- Tangled filament roll
- Extruder shape/materials
- Nozzle shape/defects
- feed system (direct drive vs bowden)
- Extruder temperature deviation (how accurately can it hold its temperature)
- Buildplate temperature deviation
- Coldend condition (play/flexibility)
- Used heater cardridges
- Placement and type of thermistors
- PC settings ( such as auto-standby)
- Basic design structure (Moving table, moving carriage, HBOT CoreXY, Delta, Polar)
- Drive design (belts, fishing line, screws, rollers)
Process
- Type of slicer used
- Slicing settings (temperature, cooling, type of infill/perimeters, overhang settings, ooze etc)
- Slicing quality (of actual Gcode produced by slicing software)
- Creparation of build platform
- Cleaning of printer parts
-
People
- Calibration
- Setup
- Maintenance
- Experience (this is the big one)
- Flexibility to adjusting settings according to needs
Management
- Piss poor design (opensource or pre-assembled)
- This includes the use of sub-standard components in order to save money (plastic sleeves vs linear bearings, etc)
Re: Lean/Six Sigma Approach to 3D printing (guide under construction) September 21, 2014 01:22PM |
Registered: 9 years ago Posts: 376 |
Re: Lean/Six Sigma Approach to 3D printing (guide under construction) September 25, 2014 11:14AM |
Registered: 9 years ago Posts: 36 |
Quote
Stef Stuntpiloot
Hello all, I started this topic to get some information that is not readily available. I need this information to perform a research to improve the reliabiliy of the printers.
3D printing is a rapidly in popularity growing method to produce small/medium objects. In this fast market there is a lot of research targeted at printing speed,
accuracy and price. In my opinion there is a side of 3D printing that gets less attention than it deserves, the reliability of the printing process.
When looking around on forums it is obious that a lot of people experience problems with prints that have defects such as:
- premature release from the buildplate
- Warping
- Inaccurate dimensions
For this research I need your experiences. If you would be so kind to answer the following questions, that would help me a lot!
1 - What percentage of prints fails? (one in for example) (A fail means a print that cannot be used or have to be stopped before the print finishes)
2 - Can you give a top 3 causes for these fails?
3 - What materials do you use to print?
4 - What material gives most troubles?
5 - Do you use a heated bed?
6 - Do you have an encosure around the printer?
When I finish my research I will share my results here. I plan to add a guide about the Lean/Six Sigma approach for all 3D printer users to optimise the fabrication process.
What is Lean manufacturing?
Link to WikipediaQuote
Lean manufacturing, Lean Enterprise, or lean production, often simply, "lean", is a production philosophy that considers the expenditure of resources in any aspect other than the direct creation of value for the end customer to be wasteful, and thus a target for elimination. Working from the perspective of the client who consumes a product or service, "value" is any action or process that a customer would be willing to pay for.
What is Six Sigma?
Link to WikipediaQuote
Six Sigma seeks to improve the quality of process outputs by identifying and removing the causes of defects (errors) and minimizing variability in manufacturing and business processes. It uses a set of quality management methods, including statistical methods, and creates a special infrastructure of people within the organization ("Champions", "Black Belts", "Green Belts", "Yellow Belts", etc.) who are experts in these methods. Each Six Sigma project carried out within an organization follows a defined sequence of steps and has quantified value targets, for example: reduce process cycle time, reduce pollution, reduce costs, increase customer satisfaction, and increase profits. These are also core to principles of Total Quality Management (TQM) as described by Peter Drucker and Tom Peters (particularly in his book "In Search of Excellence" in which he refers to the Motorola six sigma principles).
Thanks in advance!
Re: Lean/Six Sigma Approach to 3D printing (guide under construction) October 12, 2014 04:27AM |
Registered: 9 years ago Posts: 7 |
Re: Lean/Six Sigma Approach to 3D printing (guide under construction) October 12, 2014 08:55AM |
Registered: 10 years ago Posts: 67 |
Re: Lean/Six Sigma Approach to 3D printing (guide under construction) October 15, 2014 05:57PM |
Registered: 9 years ago Posts: 7 |