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Support Scars and Rough Undersides

Improve surfaces above supports, reduce pitting, and protect visible detail.

Start herePrioritize orientation and interface design. A perfectly smooth downward face is difficult with same-material supports, so move cosmetic surfaces away from support whenever possible.

First safe actionRun the first safe check and change one variable at a time.

Proof targetA small representative test no longer shows the original symptom.

Problem, repair steps and target result for support scars and rough undersides — Match the failed area to the visual before changing a setting.

Repair progress0 of 7 complete

Step 1 of 7

Rotate the model to protect the most visible surface.

Visual reference while completing step 1 of support scars and rough undersides — Keep the problem and target visual open while you make this change.

Why this matters

Support contact is unavoidable on the show surface.

Setting or checkInterface pattern

Choose a consistent pattern supporting the first model layer.

Expected result

Supported surface is structurally complete.

Step 2 of 7

Use painted/manual supports to limit contact to necessary areas.

Visual reference while completing step 2 of support scars and rough undersides — Keep the problem and target visual open while you make this change.

Why this matters

First supported layer sags.

Setting or checkFirst layer above support

Slow and cool appropriately.

Expected result

Scars are limited to hidden areas.

Step 3 of 7

Tune top Z distance with a small sample.

Visual reference while completing step 3 of support scars and rough undersides — Keep the problem and target visual open while you make this change.

Why this matters

Support fuses and tears the surface.

Setting or checkXY separation

Prevents side walls from bonding to support.

Expected result

Support removes without tearing.

Step 4 of 7

Use two or more interface layers at a sensible density when the slicer supports it.

Visual reference while completing step 4 of support scars and rough undersides — Keep the problem and target visual open while you make this change.

Why this matters

Lines are poorly supported or overly bonded.

Setting or checkInterface pattern

Choose a consistent pattern supporting the first model layer.

Expected result

Dimensional faces remain accurate.

Step 5 of 7

Slow the first layer above support.

Visual reference while completing step 5 of support scars and rough undersides — Keep the problem and target visual open while you make this change.

Why this matters

The bridge layer cannot hold shape.

Setting or checkFirst layer above support

Slow and cool appropriately.

Expected result

Supported surface is structurally complete.

Step 6 of 7

Tune cooling and bridge flow for the material.

Visual reference while completing step 6 of support scars and rough undersides — Keep the problem and target visual open while you make this change.

Why this matters

Support contact is unavoidable on the show surface.

Setting or checkXY separation

Prevents side walls from bonding to support.

Expected result

Scars are limited to hidden areas.

Step 7 of 7

Consider splitting and joining the model.

Visual reference while completing step 7 of support scars and rough undersides — Keep the problem and target visual open while you make this change.

Why this matters

First supported layer sags.

Setting or checkInterface pattern

Choose a consistent pattern supporting the first model layer.

Expected result

Support removes without tearing.

Controlled test log

Change one variable, then record what happened

This keeps temperature, retraction, speed, mechanical, and material tests from blending together. The history stays private in this browser.

Open proof report →

No controlled tests logged yet. Record the first change before adjusting a second variable.

Do not repeat the full print yet

Prove the repair with a small test

Test modelSmall overhang and support coupon

Setup

Use the final layer height, support interface and cooling profile.

Pass condition

Supports detach predictably and the underside is intact.

If it still fails

Supports fuse, collapse or leave severe scars.

Recheck visual diagnosis

Complete the repair steps, run the proof test, and record the result.

Only if the proof test still fails

Next strongest repair paths

Do not stack these changes. Open one related guide based on the evidence that remains.

Visual guide for supports hard to remove

SupportsSupports Hard to Remove

Open this related Supports guide when the first repair path does not fully explain the remaining symptom.

Open guide →

Visual guide for bridging and sagging fix

SupportsBridging and Sagging Fix

Use this next when unsupported spans droop rather than supports fusing.

Open guide →

Visual guide for overhang curling and drooping

SupportsOverhang Curling and Drooping

Open this related Supports guide when the first repair path does not fully explain the remaining symptom.

Open guide →

Matched next step

Keep the useful workflow going.

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