Convert elbow 90° to 45° (E90to45)

1. Purpose

Swaps placed 90-degree elbows to 45-degree elbows without deleting and redrawing them. Use it when a design changes from square bends to swept bends for smoother drainage, or when 90-degree elbows clash with architecture.

2. Quick video (≤ 2 minutes)

[Video in production — follow the steps below for now.]

3. Steps

1. Open a view where the 90-degree elbows are clearly visible. [image 01: the 90-degree elbows to convert]
2. Click E90to45 inside the ElbowConvert split menu in the VP_MEP tab, Plumbing panel.
3. When prompted to pick a family instance, click each elbow to convert (press Esc to finish). [image 02: picking an elbow in the model]
4. The tool converts each elbow to 45 degrees in place, keeping both connected runs untouched. [image 03: elbows converted to 45 degrees]

4. Real-world example

A DN110 drain run has six 90-degree elbows, and the owner wants 45-degree bends to reduce clogging. Click E90to45, pick the six elbows one by one — done in a minute, with both pipe ends unmoved.

5. Common errors

Symptom	Fix
Picking changes nothing	You picked a straight pipe — pick an actual elbow fitting (a family instance)
Converted elbow reports a break	The elbow family lacks a 45-degree type for this DN — load it, then rerun
The button is nowhere to be seen	It lives inside the ElbowConvert split menu — expand the arrow to find it

6. See also

• Convert elbow 45° to 90° — the reverse conversion.
• Fix common pipe issues — re-check connections after converting elbows.