Engineering
Mystery Box
10 rolls for $99.
Usually $349.50
Random rolls from the whole FusRock range (ABS, ASA, PETG, carbon-fibre and glass-fibre blends) plus support filament. Tough stuff for parts that need to take heat, sun and knocks. Free shipping over $99*. Order before 1pm and it usually ships the same day.
⚠ Limited stock, while stocks last. May sell out before 1 December.
This offer has ended. Thanks for shopping Black Friday with us!
What's in the box
Full rolls of engineering filament for the jobs PLA can't handle, packed at random by our Sydney team. Open it up and see what you got.
Full-size rolls, not samples. Worth $349.50 if you bought them one by one.
Per roll. You save $250.50 on the box.
The whole FusRock range we stock, plus support filament. All 1.75mm.
Free shipping over $99*. Orders before 1pm usually ship the same day.
What each filament is good for
Every box is a random mix from this range, so no two are the same.
Takes the heat
Strong, heat-resistant parts like car interior clips, tool holders and electronics cases. Low-odour formula.
Made for outdoors
Like ABS, but built to handle sun and rain. Good for garden, car and outdoor parts.
Matte and easy
PETG with 5% glass fibre. Warps less than regular PETG and gives a frosted, matte finish.
Up to half the weight
Foams as it prints, so parts can weigh up to 50% less than regular ASA. Made for RC planes, boats and drones.
Stiffer, cleaner finish
PETG with chopped carbon fibre. Less warping and shrinking, neater overhangs and a frosted look.
Outdoor, reinforced
Low-odour ASA reinforced with glass fibre, for stiffer parts that live outside.
Seriously strong
Nylon with 25% carbon fibre. Very strong and heat-resistant, even with thin walls. For jigs, brackets and working parts.
Hard-wearing nylon
High-temperature nylon with 15% carbon fibre. Resists wear and heat, so it suits gears and moving parts.
Clean overhangs
Print it under tricky overhangs and it comes away cleanly, leaving a neater surface underneath.
Heads-up: carbon- and glass-fibre filaments need a hardened steel nozzle. The two nylons print at 300–340°C, so check your printer can reach that. ASA Aero needs a 0.6mm or larger nozzle.
Colours you might get
We pack your box from the FusRock filament we have in stock, and any of these colours could turn up.
FusRock Odorless ABS 13 colours
FusRock ASA 10 colours
FusRock PETG Matte 5 colours
FusRock specialty filaments 5 filaments
How it works
Three steps, and the timer's running.
Order by 1 December
$99 a box. Buy as many as you like, but stock is limited.
We pack a surprise
Our Sydney team fills every box with 10 random FusRock rolls and support filament.
Fast delivery
Order before 1pm and it usually ships the same day. Free shipping over $99*.
Engineering filament mystery box FAQ
Quick answers before you grab a box.
What's in the box?
10 rolls picked at random from the FusRock range we stock: Odorless ABS, ASA, PETG Matte, ASA Aero, PETG-CF, ASA-GF10, NexPA-CF25 and PAHT-CF, plus support filament. Every box is a different random mix.
Can I choose the materials or colours?
No. Materials and colours are random and can't be chosen or swapped, and that's the surprise.
Will it work with my printer?
All rolls are standard 1.75mm. ABS and ASA print best on an enclosed printer with a heated bed, which keeps corners from lifting. Carbon- and glass-fibre filaments (PETG Matte, PETG-CF, ASA-GF10 and the nylons) need a hardened steel nozzle. NexPA-CF25 and PAHT-CF need a hotend that reaches 300–340°C, and ASA Aero needs a 0.6mm or larger nozzle.
ABS, ASA or PETG: what's the difference?
ABS handles heat well and is great for tough indoor parts. ASA is similar but stands up to sun and weather, so use it outdoors. PETG is strong, slightly flexible and the easiest of the three to print.
What do carbon fibre and glass fibre add?
Chopped fibres make parts stiffer and help them hold their shape with less warping, and they give a matte finish. The nylon blends (NexPA-CF25 and PAHT-CF) are the strongest and most heat-resistant in the range.
What is the support filament for?
You print it under overhangs and hard-to-reach spots. It comes away cleanly after printing, so the surface underneath looks neater.
How much is shipping?
Free on orders over $99 (excluding printers) to most of Australia. A surcharge applies to remote areas; see our shipping policy.
Is there a limit?
No limit per order, but stock is limited. Once the boxes are gone, they're gone, even before 1 December.
When does it end?
6pm Sydney time (AEDT), Tuesday 1 December 2026.
What is FusRock?
FusRock makes engineering 3D printer filaments, from Odorless ABS and ASA to carbon-fibre nylon. We stock the range in Sydney.
Where do you ship from, and how fast?
We ship from our warehouse in Regents Park, Sydney. Orders placed before 1pm on a business day usually ship the same day, Australia-wide.
Can I pick up my box in Sydney?
Yes. Choose pickup at checkout and collect from our Regents Park warehouse and service centre.
Is it a good gift for 3D printing fans?
Yes, especially for someone ready to move beyond PLA. It's an easy way to try engineering filaments without buying each one separately.
How should I store the filament?
Keep rolls sealed or in a dry box with desiccant. The nylons (NexPA-CF25 and PAHT-CF) soak up moisture fast, so put them straight into a dry box once opened. If ABS, PETG or support filament starts printing rough after being left out, dry it before printing.
10 rolls. $99. Built tough.
Usually $349.50
Black Friday Mystery Box: random FusRock engineering filament & support. Limited stock, ends 1 Dec, 6pm AEDT.
This offer has ended.
Add to Cart – $99*Offer ends 6pm AEDT, Tuesday 1 December 2026. Each box contains 10 rolls of 1.75mm filament, picked at random from the FusRock range we stock plus support filament; materials and colours can't be chosen or exchanged. Savings compare with a usual value of $349.50 for 10 FusRock rolls ($34.95 per roll on average at our regular prices). Limited stock, available while stocks last; the offer may end early if sold out. No limit per order. Free shipping on orders over $99 (excluding printers); a surcharge applies to remote areas. See our shipping policy. Refund policy.
