Every Ender 3 owner knows the ritual: the print needs a nozzle swap, and the Allen keys are in a drawer, the wrench is somewhere in the room, and the flush cutters were last seen last month. A tool holder is the unglamorous fix — a small rack or caddy that mounts on (or sits beside) the printer and keeps its working tools in reach. The old version of this page wandered off into CNC machining, which is not what this object is. This guide covers what Ender 3 tool holders are, the two families they come in, and how to choose one that fits how you actually work on the machine.
What an Ender 3 tool holder actually is
Nothing electronic and nothing mechanical — an organiser. The Ender 3 ships with a small tool kit (Allen keys in several sizes, a wrench for the eccentric nuts and couplers, a spatula/scraper for print removal, and typically cutters and a nozzle needle arrive in the owner’s life soon after). A tool holder gives those five or six items fixed slots within arm’s reach of the printer, instead of a drawer across the room. Most holders are themselves 3D printed — a pleasing recursion: one of the first useful things many owners print is the holder for the tools that maintain the printer.
The two families
| Type | How it mounts | Trade-offs |
|---|---|---|
| Frame-mounted | Clips or bolts onto the aluminium extrusion — many designs use the top rail or the uprights, fastened with T-nuts or friction clips (the slot system is covered in our T-nuts guide) | Tools travel with the printer and take no desk space; keep the load light and clear of the gantry’s travel — a holder must never foul the X carriage or the Z screw |
| Benchtop caddy | Sits beside the printer like a desk tidy | Holds more (spare nozzles, PTFE tube, glue stick, callipers) and can’t interfere with motion; costs desk space |
What belongs in one
- The Allen key set the printer shipped with (frame, wheels and couplers between them use most of the sizes).
- The wrench for eccentric nuts and the nozzle — the two adjustments that need it are wheel tension and hotend work.
- Flush cutters for support removal and filament snipping.
- The bed scraper/spatula.
- A spare nozzle and the cleaning needle — small parts that vanish without a slot.
- Optional and genuinely handy: a USB/microSD reader, tweezers, and the glue stick if your bed routine uses one (see our bed adhesion guide for when it should).
Choosing or printing one comes down to three checks: it fits your tool set (measure the wrenches, not the product photo), it mounts where your hand actually goes mid-print, and — for printed frame-mounted designs — it is printed in something that tolerates sitting near a warm printer; PLA is fine on the frame away from the hotend, which describes most mounting spots. Beyond that, this is a taste purchase. The cheapest holder that keeps the five tools findable beats the beautiful one sized for tools you don’t own.
Frequently asked questions
What is an Ender 3 tool holder?
A small organiser — usually 3D printed, either frame-mounted or benchtop — that keeps the Ender 3’s working tools (Allen keys, wrench, cutters, scraper, spare nozzle) in fixed slots at the printer instead of in a drawer.
Does the Ender 3 come with a tool holder?
No. It comes with the basic tools themselves; the holder is an accessory you print or buy. Many owners print one as an early project — it is a forgiving print that immediately pays rent.
Where do frame-mounted tool holders attach?
Onto the aluminium extrusion rails, using T-nuts or printed clips. Fit them clear of all moving parts — the gantry’s full travel, the X carriage and the leadscrew — and keep the load light; the frame is a machine, not a shelf.
What material should a printed tool holder be?
PLA is fine for holders mounted on the frame away from heat sources. If a design sits unusually close to the bed or hotend, PETG’s higher heat tolerance is the safer choice.
