The 3D printing FibreTuff biocompatible materials as filament have a bone like surface texture, as well as appearance similar to cadaver models - vertebrae's, skulls, femurs, calcaneus, talus, metatarsal, skull cap, mandible, sacrum. Plus, FibreTuff can be sterilized with standard methods such as Autoclave.
The 3D printing of FibreTuff medical grade filament can be annealed to increase physical performance in some cases beyond 10%. The oven temperatures of 225F / 127C up to 45min will help increase flexibility and strength.
FibreTuff has biocompatible medical grade filaments and participates on the Ultimaker 3D Printer Materials Marketplace
FibreTuff has now produced it’s biocompatible compound with ISO 13485 certification. The company will be able to produce filaments for 3D Printing to use in surgical guides and implants. FibreTuff has global recognition to produce the most advanced 3D Printed anatomical bone like models for clinical and pre surgical assessment.
The specific gravity of FibreTuff I filament is 1.05 - 1.08 g/cc. This filament for 3D Printing is user friendly and doesn't require extensive drying like other highly engineered Nylon resins. FibreTuff I has proven to be biocompatible with similar properties to Nylon 11 or 12. Further, printed FibreTuff has twice the strength as bio resorbables like PCL. The FibreTuff is anisotropic, prints are stronger in the Z direction versus X and Y.
3D printing in the Z direction is an absolute for bone like construction. The cortical bone will have 100% infill and cancellous bone being less with different infill patterns available through printer manufacturer.
FibreTuff needs to be desiccant dried for 8-10 hrs. for optimum 3D printing performance. It can be 3D Printed with various break away materials or support structure polymers to help with the vertical printing in Z direction. Standard breakaway or water soluble PVA for the Ultimaker 3D Printers can be used.
Recommended processing conditions.
The nozzle size should be .4 or .5mm with temps at 235 - 240C.
The printer bed should be heated at 80 -100C.
Cooling Fan on for first few layers than turned off
Recommended layer height .1 - .2mm
Printer oven is desired - temps 80C.
Printing speeds 45 -50 mm/sec
Density or infill is at 90 - 93% infill
Recommend Adhesive or breakaway - PVA
Please note: A new spool of FibreTuff Medical Grade filament is packaged in a vacuum sealed package with desiccant and will require some desiccant drying. If you leave spool exposed to elements over a period of time estimated at 3-4 days, moisture pickup is possible and may effect adhesion for layering. An indication of too much moisture is over extrusion or nodules present. It is recommended to desiccant dry spool for 10 hrs before printing.
The 3D printed hand models produced at VosFox medical with FibreTuff showed details having 27 segmented bones attached with wires and pins. The process controls to make the hand included proper drying of FibreTuff before 3D printing. VosFox Medical in the Netherlands is now printing feet with each bone segmented to show realistic construction. see website www.vosfoxmedical.com
3D printed FibreTuff compounds for capacitive touch applications.See 3D Printer nScrypt Utilizes FibreTuff's PEEK Alternative PAPC 3D Printing Filaments
All FibreTuff biocompatible materials for 3D Printed parts are hydrophilic. These bone models are exposed to water to absorb moisture to increase flexibility and impact. Real bone will react similar when exposed to body fluids.
FibreTuff medical grade filament requires a heated build plate or adhesive for 3D Printing. Utilizing EZ-STIK GeckoTek build plate with 225C nozzle temperature and heated bed at 95C with PAPC II is preferred. https://www.geckotek.co/collections/build-plates/products/ez-stik-hot-build-plate
To adhere the FibreTuff medical grade filament to a 3D Printer heated bed - PVA water soluble breakaway, a glue stick or adhesive sheet is required. Magigoo is a preferred adhesive https://magigoo.com Cube Glue is a good choice for increasing bed adhesion with FibreTuff biocompatible medical grade filament.
3D printing of the FibreTuff II passed Cytotoxicity and Skin irritation tests and USP Class VI testing for temporary biocompatible implants. The in vivo testing was performed by NAMSA a regulatory approved testing company for medical devices and implants.
FibreTuff medical grade filaments can be 3D printed with no offensive odors at recommended temperatures. Matter of fact there is no maleic in some filament that can cause skin irritation.
FibreTuff II medical grade filament requires a heated bed 80 -110 c . You can purchase the biocompatible FibreTuff II in a 1.75 or 2.85mm size filament. For the FibreTuff II to adhere to the heated bed a glue or adhesive sheet is required. The glue stick recommended is Cube Glue. GeckoTek is a supplier of adhesive sheet for 3D Printing. The nozzle size recommended for FibreTuff II are .5 with a processing temperature from 220 to 225C. If you use a .4 nozzle, higher heats may be necessary at 230C. A 3D Printer oven is preferred at temperatures of 80C for maximum efficiency.
FibreTuff has been printed with various printers and software. Additional information for 3D printing FibreTuff with more than 3 axis of freedom is available. Contact firstname.lastname@example.org for more information
Ultimaker S5 Printer had utilized nylon parameters with FibreTuff medical grade filament for 3D Printing the part shown in the video at RAPID 2019 . The FibreTuff showed remarkable adhesion that utilized cellulose fiber in the biomaterial composition.
nScrypt has 3D Printed a skull cap with bone like qualities using FibreTuff medical grade filament.
The Air Wolf Axiom 3D printed FibreTuff medical grade filament at processing speed 45mm/sec to produce a calcaneus bone. The nozzle dia. .5mm at 235c temperature. The heated bed set at 100c. No oven chamber required.