How to Add Supports in PrusaSlicer (Including Organic and Custom)

To add supports in PrusaSlicer, open Print Settings > Support material and tick Generate support material. For tree-style supports, set Style to Organic. For custom supports you place by hand, use the Support painting tool in the left toolbar. If you do not see these options, switch the mode toggle in the top-right corner to Advanced or Expert.

Turn on automatic supports

1. Set the mode toggle (top right) to Advanced or Expert.
2. Open Print Settings > Support material.
3. Tick Generate support material.
4. Choose where: Support on build plate only keeps supports off the model, or leave it unticked to support overhangs everywhere.

Choose a style

The Style dropdown in the Support material section controls the shape. For most parts, Organic is the best default; keep Grid for tall, heavy overhangs that need the rigidity:

Style	Material use	Cleanup	Best for
Grid	Highest	Hardest	Tall, heavy overhangs needing rigidity
Snug	Medium	Moderate	General use, less waste than grid
Organic	Lowest	Easiest	Most parts; the "tree supports" people ask for

Paint custom supports

When automatic placement puts supports where you do not want them, paint them by hand:

1. Select the object and choose the Support painting tool from the left toolbar.
2. Paint enforcers on areas that must be supported.
3. Paint blockers on areas that must never be supported (cosmetic faces, for example).
4. Set the support mode to For support enforcers only if you want supports only where you painted, or keep automatic generation and use blockers to carve out the exceptions.

Enforcers and blockers are saved with the object, so they travel with the 3MF project.

Support settings that matter

Once you have picked a style, a few settings decide how clean the result is and how hard the supports are to remove, all under Print Settings > Support material:

Setting	What it does	Tip
Top contact Z distance	Gap between supports and the model underside	Larger releases easier but sags more; PETG needs more than PLA
Interface layers	Dense layers between support and model	More gives a smoother supported surface
Overhang threshold	Angle below which supports generate	0 lets PrusaSlicer decide; set an angle to force or limit them
XY separation	Horizontal gap around the model	Keeps supports from fusing to nearby walls

Dial the top contact Z distance first, since it is the single biggest lever on whether supports snap off cleanly or leave scarring.

Why this matters for a print farm

Support strategy is where a print quietly costs you labor: get the style or contact distance wrong and every copy needs manual cleanup, or fails outright on the overhang. That cost multiplies with every unit in a run, so the supports have to be right once and identical on every machine after that.

Painted enforcers and blockers live in the 3MF, so the prepared file is the source of truth. Printago slices that file the same way on whatever printer is free, which means the operator pulling parts off the bed is doing the same cleanup every time instead of guessing. See how to set up a 3D print farm and the PrusaSlicer overview.