Popular fittings › 45° elbow

45° elbow

A gentle 45 degree swept elbow. Free 3D printable, every dimension adjustable, export 3MF, STL or STEP.

Opens with the sizes below. Change anything, then export 3MF, STL or STEP. Free, no account, runs in your browser.

Starting sizes

Need another size? Every dimension is editable in the designer, in millimetres or inches.

What it is

A 45° bend for gentle direction changes. Two of them make a smooth offset and lose less airflow than one sharp turn.

How to measure

For each end, measure the hose, pipe or port it joins with calipers. If that part slides into the fitting, measure its outside diameter and keep “Measure by: Inner diameter”. If the fitting slides into a hose, measure the hose’s inside diameter and switch to “Outer diameter”. Measure twice across the circle; flexible hose is rarely perfectly round.

Print tips

• The export already places every component in its recommended print orientation. Keep supports off sleeves, sockets and any sliding or tight-fit surface so they stay smooth; if your slicer asks for supports, paint them only where an outside overhang needs them.
• Use 3–4 perimeters for an airtight wall; infill matters much less than wall count for ducts.

Frequently asked questions

What size should I measure?

For each end, measure the hose, pipe or port it joins with calipers. If that part slides into the fitting, measure its outside diameter and keep “Measure by: Inner diameter”. If the fitting slides into a hose, measure the hose’s inside diameter and switch to “Outer diameter”. Measure twice across the circle; flexible hose is rarely perfectly round.

What should I print it in?

PLA or PETG both work for dust collection at room temperature. Print in PETG or ASA if the air is warm or the part sits in the sun. Use 3–4 perimeters for an airtight wall; infill matters much less than wall count for ducts.

What hardware do I need to buy?

Nothing is required at these starting sizes: it prints in one piece. A hose clamp is optional if a hose feels loose.

Does it need supports?

The export already places every component in its recommended print orientation. Keep supports off sleeves, sockets and any sliding or tight-fit surface so they stay smooth; if your slicer asks for supports, paint them only where an outside overhang needs them.

More popular fittings

• 100 mm 45° elbowA gentle 45 degree swept elbow for 100 mm duct. Free 3D printable, every dimension adjustable.
• 100 mm 90° elbowA swept 90 degree elbow for 100 mm duct and hose. Adjust bend radius and end sizes, then export 3MF, STL or native STEP.
• 4 inch 90° elbowA swept 4 inch 90 degree elbow for dust collection hose and pipe. Free, adjustable, export 3MF, STL or STEP.
• 90° elbowA swept 90 degree elbow with adjustable bend radius and end sizes. Free 3D printable, export 3MF, STL or native STEP.
• Swept S offsetA smooth offset between parallel ends with a continuously swept airway. Free 3D printable.
• 180° return bendA true semicircular return with independently sized ends. Free 3D printable duct U-bend.