taulman3D is today releasing a new high strength Nylon co-polymer to testers
around the world for review. The new material is named "Bridge" as it is a
consolidated effort by thousands of nylon 618 and nylon 645 users along with the
help and support of both our extrusion house and chemical company.
Dubbed "Bridge" by our local St Louis testers as bridging the strength of nylon
645 together with the price of current ABS and PLA thermoplastics, allows any
user the flexibility to determine the best choice in material for their printing
From our customers, we have logged and prioritized the most sought after
features of a high strength printing material. These were in order:
A Lab certified measure of tensile strength.
Better Adherence to the Printing platform.
Reduced water up-take from local humidity
Non-destructive evaluation (Opacity)
Starting with our strongest base polymer used for a percentage of nylon 645, we
began working all of these requests.
Adherence to the Printing platform:
First, was the adherence to the Printing platform. Those that follow the use of
nylon in posts, blogs and 3DP discussion rooms know of using garolite (LE) as a
print surface. While this works well for all of taulman3D nylons, garolite is
not always easy to acquire and even so, requires a properly cut section that
fits each user's unit. Our thanks goes out to our chemical company for helping
to change this requirement. The surface properties of most nylons is extremely
slippery making adherence to the printing platform difficult. Our chemical
company was able to make minor adjustments, to reduce the surface effect just
slightly, thus allowing for the use of most PVA glues, either full strength or
diluted. Initial testing shows that in some cases, the PVA was better with
Bridge than garolite is with 618. Thus, some dilution was used. The specific PVA
used in our labs is a very low cost "ELMER'S Glue-All" White PVA.
Reduced water up-take:
Next was Reduced water up-take from local humidity. While it is not possible to
eliminate the water uptake by nylon, it is possible to localize it to the
surface through final processing changes. Therefore when printing, rather than
water creating a subtle popping that can effect the surface finish, Bridge will
hold the water to the outer portion resulting in a slight steam when wet. The
result of this is that Bridge needs little or no drying in the winter and just
needs to be warmed in the summer months. This is a manufacturing process that
our extrusion house developed and added to our existing taulman3D processes.
We found that the same process that reduces water uptake also helps to reduce
shrinkage. While nylon will always have a slightly higher amount than ABS, we
were able to reduce it to an in/in value less than our current nylons. These
changes also led to a slight reduction in stringing as the extruded threads are
a thicker melt.
Non-destructive evaluation of 3D Printed parts is a function of the transparency
of Bridge. Like nylon 645, this transparency allows for visual inspection of
printed parts. This is a combined request from our industrial and clinical
customers. As noted early on, parts can be printed "too fast" for some polymers.
While the outside of the part may look acceptable, a part printed too fast will
not have internal fill material that actually adheres to the inside of the
perimeter. With Bridge and nylon 645, Non-destructive evaluation is a simple
Certified measure of strength:
With this combination of advancements, taulman3D proceeded with a limited test
run. From this initial test run, we printed test samples to be sent out to the
St Louis test labs. A fully accredited testing facility supporting the central
US. The lab reported a Tensile Stress PSI of 4,800 for Bridge when 3D printed.
taulman3D supports several industrial, commercial and clinical customers with
nylon 645 and this has allowed us to meet all of our pricing tiers for certain
chemicals used in 645. Because 'Bridge" is a very close chemical polymer to
nylon 645, we are able meet these pricing requests.
As with all of the taulman3D releases to date, we ship out free samples to
respected testers in various technical fields all over the world. The intent is
that they will report on the best settings as well as specific uses for Bridge.
Look for comments from the 3D Printing community, Industrial community and the
Academic community for additional information on Bridge. Just some of the
testers that will receive over 100 spools of Bridge::
Glenn W. Walters, Director, ESE Design Center Dept. of Environmental Sciences &
Engineering University of North Carolina at Chapel Hill
Richard Horne, (RichRap) 3D Printer Designer and Author
Ben Malouf, HELIX 3D Printer co-designer
whosawhatsis, (Rich) 3D Printer Designer G+, Hardware, Software and Systems
Daniel Norée ,Author of OpenRC, Designer, Maker, Presenter, destroyer of small
Sanjay, E3D - Hardware - Hotend Designer
Shawn Tait, Lead Industrial Tool Manufacturing Engineer, Mold and Extrusion Dies
Tim Rastal, 3D Printer Designer, Systems developer G+ support resource
Joseph Belter, Yale Engineering Deans office, Robotics
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