Taulman 3D "645" is a high strength nylon co-polymer that is specifically engineered for 3D printing applications where excellent surface bonding, reduced water absorption, tear resistance and transparency are combined into an easy-to-print line.
Taulman 645 comes from the same manufacturer as Taulman 618, it has all of the same remarkable characteristics when it comes to strength and durability. Taulman 645 Nylon has comparable warping properties as Taulman 618, but is different in that it is stronger, has improved surface bonding, and is more clear/translucent.
- Nylon 645 prints as a bright natural with a clear translucent surface.
- Very high strength
- Extreme durability
- Excellent bridging performance
- Superior surface texture
- Maximum bonding during a thermal (3D Printing) transition
NOTE To industrial users - Nylon 645 is the equivalent of a non-filled Nylon 6,6
having almost identical Chemical resistance.
Nylon 645 Features:
645 is currently being used by CNC shops around the world to support quick turn prototypes for Pre-Pilot and Pilot runs as well as some limited production runs. As global supply compresses and just-in-time becomes just-a-little-late, more and more CNC shops are jumping in to fill quick turn needs.
645 is machinable with similar settings and cutting speeds as used in Cast Nylon blocks.
Thermal properties are slightly higher than Nylon 6,6 and Nylon 6,12.
What are the major differences to me if I print in 645 ?
There is almost no De-lamination. The bonding of thread-to-thread at the correct temperature is very impressive. Of course, even injection molded parts are subject to splitting at right angle transitions, but compared to ABS and PLA we know you will be impressed. 645 gives off no odor as compared to ABS. Residual odors come from the humidity (water) that boils or steams off during printing.
What makes 645 different from standard nylon?
Standard nylons have been tried in the past and failed due to very high temperatures and the lack of compression in RepRap type printers. The greatest amount of the strength and bonding of the nylons comes from the compression used in injection molding processes with dies. Of course RepRap type printers print with no compression at all, thus reducing bonding significantly.
645 uses a modification to the standard material chain resulting in a new co-polymer to dramatically enhance bonding. To accomplish this improved bonding and thermal uniformity during the 3D Printing process, both the new co-polymer and manufacturing method are unique to 645. The resistance to chemical degradation was also a top priority for 645 as the ability to 3D Print molds as well as operate in harsh environments was at the top of the list of material performance requirements. The final requirement for 645 was surface finish. As a material that can be used to print parts that in turn would be supplied directly to the end user/customer, 645 was to be instantly recognizable as a superior polymer.
Can I still print in High Resolution?
I want to print parts in 645, what is the best printer to buy?
taulman is hardware neutral. This includes complete assemblies/Printers and sub-assemblies/Hot-Ends, extruders, etc.. As a "filament", 645 is designed to be used by all RepRap style/type 3D Printers. There are several great Forums and IRC Channels dedicated to helping new users.
What setting will I need to change in my skinning software?
. Most testers found they only needed to make sure their idler tension was tight so the material didn't slip. Otherwise, it's install and print! Users with direct drive 1.75mm extruders found that a small increase in retraction distance helped to eliminate trailing threads.
Can I still use bridging?
Yes, in fact several testers report excellent results with bridging.
Can I print parts that have a smooth color luster?
Definitely! 645 delivers a beautiful printed finish.
How do I get prints to stick to my platform?
The best bonding is to coat clean glass with PVA (Elmers Glue All) and heat the glass to 45-50C. This creates a significant "tak" that should hold all prints in place.
Are there fumes and odors?
The taulman polyamide materials give off almost no odor as compared to ABS. Most residual odors come from the humidity (water) that boils or steams off during printing and 645 had no measurable HCN.
When printing with ABS, Nylon, PLA or any material, we are changing the state of elements with temperature, so make sure you vent all fumes and odors.
Is 645 FDA Approved?
No, as FDA approval is a very expensive undertaking. 645 is inert to the body and contains zero organics. 645 is also "indigestible" and will pass through the system.
What is the most "visible" printing difference I'll notice when printing with 645?
Shine or sheen from the translucent surface. This looks much different than PLA surfaces.
Will 645 foul my nozzle if I leave the heater on?
No! ...We've left our heaters on for over 8 hours after a print with no issues at all. We also commonly move back and forth from ABS to 645 with no issues at all. We just purge about 50mm's and start printing.
Is there any chemical that I should "not" use with 645?
Yes, any strong acids or Chlorine's/Bromine's can be a problem. They will break down the bonding of threads and weaken the printed part.
What will be the biggest differences in my part from being printed in ABS and then 645?
1. Strength. You will be amazed at the strength properties of 645. Some testers have reported 80%-100% fill is as strong as injection molded parts.
2. Weight....645 is lighter than ABS and PLA.
3. Pliability - A major advantage with 645 is the pliability that some of us have desired for a long time. From stretch in bands, to elasticity in support components. Pliability means that multi-part assemblies are more likely to work as designed with minimal filing, cutting and sanding. Springs can be completely compressed and return to a printed state.
4. Slippery Surface - 645 can eliminate collars, U-joints, washers, separate raceways and ball joints by using the materials slippery properties. Ball bearings that require no lubrication are easily printed. And most important, threaded holes that won't delaminate under pressure.
Will retraction work?
Yes! At most, you may have to increase your retraction distance an additional 2mm - 3mm.
Your Color Page mentions RIT Dyes, are there other dyes I can use?
You can use any dye that is "acid based". Most textile dyes and some paper dyes are acid based. These are very light acids on the same pH level as vinegar.
Can I glue my 645 parts together?
taulman3D now offers a Nylon Glue called "ComPlete"
Can I just use plain Nylon trimmer line?
Trimmer line does "look" like and contain nylon, however, trimmer line or weed-whacker line also contains various additives that are destructive and or dangerous for your 3D Printer.
First, it has fiberglass to strengthen it, as without fiberglass, the ends will fray/split and cause trimmer jams. Next, nylon on it's own is too flexible in a thin line, so fiberglass hardens it for cutting. Fiberglass will foul your nozzle because it requires a higher temp to melt along with the nylon. The higher temp will actually boil the nylon and other additives giving off a smell. The additives are there to reduce the bulk % of nylon as nylon is more expensive than the additives. These additives are usually calcium based and can clog or foul your nozzle
STORAGE: One large resealable bag with slider + an extra desiccant pack are included with every spool. The bag and extra desiccant are a great way to safely store your filament spool when not in use. It keeps your filament bone dry & free from any dust or dirt particles, so it's always ready for your next print.
NET WEIGHT: 0.45 KG (1.1 LB)
|250°C - 265°C
- Nozzle = any size
- For ALL Nylon based materials, users should turn "OFF" any fans that blow on the printed part unless it's a very small part of less than 10mm sqr. = Alloy 910, 618, 645, Bridge, PCTPE, 680 and 230
- 618 will not print/stick to glass or aluminum print tables. The best table material for a new user is a flat piece of unfinished poplar wood or blue painters tape. For perfect adhesion, Taulman 3D recommends using Garolite (LE).
- 645 is an industrial line and as such is designed to print in greater layer heights than you usually print. There is no need to print fine layers unless you need high vertical resolution. We suggest 60% OF NOZZLE DIA.
- Taulman 645 has a slightly higher viscosity than other printing materials. As the layer height exceeds 50% of the nozzle dia, printing speed should be adjusted downward ~10% - 20%
- Retraction: due to a slightly higher viscosity, the retraction distance may need to be lengthened
- Excessive bubbles in the printed thread are an indication of a higher than required print temperature. Reducing Print temperature below 238C will result in less thread opacity due to recombination with the atmosphere, however this will also reduce bonding in layers exceeding 25% of nozzle diameter
- Shrinkage is equal to ABS and can be controlled using garolite (LE) as a print table cover/plate
- Heated beds help just as they do for printing with ABS