Black TPU 68D

Sidd's Shore 68D TPU — for when 95A is too soft. 68D on the Shore D scale (≈ 95–98 Shore A on the harder durometers) sits between flexible TPU and rigid engineering plastics. You get genuine impact resistance, abrasion resistance and chemical tolerance, but with semi-rigid stiffness that prints like a slightly bouncy nylon — not a rubber band.

What it's for

• Mechanical parts that flex but don't squish — gears, gripper jaws, knobs, latch hooks, bumpers
• Living hinges — survives more cycles than PLA/PETG hinges
• Industrial seals & gaskets where 95A would compress too far
• Cable strain reliefs, drone arms, RC parts — energy absorption without going floppy
• Phone cases & protective shells with a more premium, less rubbery feel

Why 68D over 95A

• ~3× stiffer — holds shape under load instead of bending
• Faster, easier prints — closer to PETG in print behaviour, less retraction tuning needed
• Better detail resolution on small features
• Direct drive recommended, but 68D is forgiving enough to print on a quality bowden setup

Recommended print settings

Hotend

220–240 °C

Heated Bed

50–60 °C

Print Speed

30–50 mm/s

Retraction

2–4 mm direct, 4–6 mm bowden

Cooling

30–50 % part fan

Bed adhesion

PEI / glass with glue stick — sticks well

Drying

50–60 °C for 8–10 h before printing if humidity-exposed

Diameter

1.75 mm

Net Weight

1 kg

Compatibility

Prints on any direct-drive 3D printer (Bambu, Voron, Prusa MK4/CORE One, Qidi, etc.). Bowden setups can run it slowly with extra retraction. Avoid extreme print speeds — TPU 68D handles much better than soft TPU but still benefits from controlled flow.

Storage

TPU is mildly hygroscopic. Store in a sealed dry box with desiccant. If prints become stringy or have a popping sound, dry at 50–60 °C for 8–10 hours and try again.

Sold by SIDDAMENT — fast Australian dispatch, AUD pricing.