nGen_FLEX by colorFabb

nGen_FLEX by colorFabb

Heat resistance 130C | Steam Sterilizable | Great layer-to-layer adhesion | Tough prints

nGen_FLEX was developed with Eastman chemical company. Based on their work with co-polyesters nGen_FLEX makes a very compatible materials with other Amphora grade materials. This means you can expect to mix both materials with good adhesion properties to truly form a dual extruded model.

* nGen_FLEX was designed to work with a Buildtak 3D printing surface and we find it does not adhere well to PEI (Lulzbut) print plates.  If you have a PEI plate please consider Cheetah as an alternative.

With just the right amount of flex, nGen_FLEX is best described as a semi flexible materials. Still capable of being fed through a Bowden tube and printed at regular PLA speeds.

Fast printing

 nGen_FLEX is engineered as a semi-flexible material which allows most users to print at regular print speeds, cutting down build times compared to other very flexible filaments. Also bowden style 3D printers, 1.75mm and 2.85mm, will be able to push this filament through without much trouble.
Open RC car by Daniel Norée

nGen_FLEX by colorFabb = fast printing
nGen_FLEX by colorFabb = Temperature resistant

Temperature resistance

 nGen_FLEX is temperature resistant to about 130C. That means 3D printed objects can be steam sterilized at 121C which is a great asset for medical / laboratory environments.

Design by _sOnGoKu_

nGen_FLEX by colorFabb = Tough prints

Flexible and tough

 Printed in single perimeters and without infill or very little, objects will feel quite flexible. Printed with multiple perimeters and more infill objects will be very firm and tough. The material is rated at a Shore A  hardness level of 95.

How to print with colorFabb nGen_FLEX

 

 To get the best possible quality out of any 3D printing material it’s important to match the slicer settings with the material which is used. On this page we’ll run through the most important settings and suggest good starting values for various printers. If your machine isn’t in our list use the general recommended settings.

In the table below you can quickly find values for your machine, scroll a bit further down to read more about each settings.

 

PRINT SETTINGS FOR COLORFABB NGEN_FLEX

ULTIMAKER 2(CURA) ULTIMAKER 2+(CURA) MP PHARAOH ED(SIMPLIFY3D) LULZBOT MINI(CURA) STACKER(SIMPLIFY3D)
print temperature 240C/260C 250/260C 250C/260C 250C/260C 260C
build platform temperature buildTak
80C/100C
buildTak
80C/100C
buildTak
80C/100C
buildTak
80C/100C
buildTak
80C/100C
print speed 30/50mm/s 30/50 mm/s 30/50 mm/s 30/50 mm/s 30/50 mm/s
cooling 0/50% 0/50% 0/50% 0/50% 0/50%
retraction – speed 40 mm/s 40 mm/s 45 mm/s 10/25 mm/s 60 mm/s
retraction – length 4.5 mm 4.5 mm 3.2 mm 1.0/2.0 mm 3.6/4.0 mm
bridge – speed n.a. n.a. 50/80% n.a. 50%
bridge – cooling n.a. n.a. 100% n.a. 100%
bridge – flow n.a. n.a. 110% n.a. 110% /120%

Heated platform – 80/100C

colorFabb highly recommends using a BuildTak plate for better adhesion. Parts which are likely to warp, either due to high infill, need for external cooling fans or due to the specific geometry of the model will get better results printed on a buildTak plate.

Advice on Using BuildTak – when printing on a brand new buildTak make sure the first layer is not pressed into the buildTak. There should be enough space between nozzle and buildTak, most likely more then you would normally use on a regular glass build surface.
Part removal from a BuildTak plate – when removing a part from the buildTak plate we advice to cool down completely and reheat to 80C. With a thin spatula, slide underneath the brim from all sides, then carefully continue with the rest of the model.

Build plate adhesion – most slicers will have the option for adding a brim around the printed object. colorFabb highly recommends to use this feature, removal after printing is very easy, the brim peals right off after making an initial cut.

Cooling

 As always, for tough strong parts with excellent layer adhesion colorFabb recommends using 0% fan. However to improve overhanging surfaces, small details and top surface quality some cooling will be required. 50% would be a good start point for most 3D printers. If layer adhesion isn’t affected you will be able to increase cooling and maybe gain some print speed at the same time without loss of quality.

Print speed

 Most machines showed good printability of the nGen_FLEX material printing at PLA speeds, but at elevated temperatures of 250/260C. Whether you can print this fast also depends on the model, some models with overhanging surfaces, or small islands / details, can’t be printed fast due the cooling down of the layers.

Printing temperature – 240/260C

 nGen_FLEX is processed at 240/260C on most 3D printers. This allows most 3D printers to achieve good flow and reach speeds quite similar to PLA.

To reach higher speed / output of material, you might need to increase temperature. The material handles higher temperatures very well.

Minimal layer time

If you’re familiar with the minimal layer time setting then you’ll know this is what causes a printer to slow down when printing fine features on a model. Slowing down the print allows each layer to cool down a minimum amount of time. This is of course different for each material, because it depends on how fast a material can dissipate heat and  how much heat needs to be dissipated.

For colorFabb nGen_FLEX it’s also important to adjust the minimum layer time when you want to print without cooling for best layer adhesion.

Retraction

 Before you start tweaking the retraction values make sure you’ve found the sweet spot in terms of printing temperature and speed for your machine.

PLA retraction values should be a good starting value for most machines. One can expect slightly higher values of retraction speed and retraction length. For more specific values have a look at our table above.

Coasting is a nice option included in Simplify3D. This is the act of stopping the extrusion just before a travel move is triggered, this helps get rid of the pressure in the hot-end and therefor also making a retraction move more effective.

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