<table><tbody><tr><td><strong>THE SHORT VERSION</strong><br>Workshop 001 covered the settings that move quality and strength most. This one covers the rest worth touching: layer height, the speeds beyond the outer wall, retraction, support settings, and the spool check that comes before any tuning. Then it walks through a five-step process so every change teaches you something.</td></tr></tbody></table>
<p><a href="https://axisbreak.com/blogs/news/axisbreak-workshop-001-slicer-settings-that-actually-matter-quality-vs-strength">Workshop 001 is here</a>. Read it first if you have not. This article picks up where it left off and does not repeat it.</p>
<h3>Inside this workshop</h3>
<p>01 Layer Height. Pick height by purpose.</p>
<p>02 Speed. Slow the right moves.</p>
<p>03 Retraction. Fix only travel defects.</p>
<p>04 Supports. Paint, block, then tune.</p>
<p>05 Filament. Check the spool first.</p>
<p>06 Tuning Order. Change one thing, learn one thing.</p>
<p><strong>01</strong></p>
<p><strong>LAYER HEIGHT</strong></p>
<h2>Pick Height by Purpose</h2>
<p>Layer height controls how thick each printed slice is. Smaller layers can smooth sloped surfaces and preserve fine vertical detail. Larger layers mean fewer passes, shorter print times, and more visible layer lines.</p>
<p>For a typical 0.4 mm nozzle, 0.20 mm is a strong everyday starting point when your tested profile offers it. Move lower for detail that will actually be seen. Move higher for prototypes and sturdy shop parts where speed matters more than a smooth curve. Stay inside the range supported by your nozzle and printer profile.</p>
<table><tbody><tr><td><strong>AXISBREAK RULE</strong><br>Pick the largest layer height that still preserves the detail the part needs.</td></tr></tbody></table>
<p><strong>Shop Note: </strong>Do not choose the smallest layer height just because it sounds better. A tiny layer can add hours without improving a simple box, bracket, or flat-sided part.</p>
<p><strong>02</strong></p>
<p><strong>SPEED</strong></p>
<h2>Slow the Right Moves</h2>
<p>Workshop 001 singled out outer wall speed, and it was right. The rest of the speed controls deserve the same selective treatment instead of one global number.</p>
<p>First-layer speed is the one to slow down first. A careful first layer fixes adhesion, elephant foot, and small-feature problems that no later change can rescue.</p>
<p>Bridge speed controls how spans behave over empty space. Slowing bridges before adding support material is often cheaper than support towers and gives cleaner undersides.</p>
<p>Travel speed is mostly free time, as long as the machine stays stable. Watch for missed steps and ringing if you push it.</p>
<p>Higher commanded speed also demands more melted plastic per second. If the hot end cannot maintain that flow, the print can under-extrude even when the motion system looks stable. A speed setting only counts if the machine can deliver the required flow.</p>
<table><tbody><tr><td><strong>AXISBREAK RULE</strong><br>Slow the feature that is failing. Leave the rest fast.</td></tr></tbody></table>
<p><strong>Shop Note: </strong>Do not cut every speed in half when only the first layer or a bridge span is failing.</p>
<p><strong>03</strong></p>
<p><strong>RETRACTION</strong></p>
<h2>Fix Only Travel Defects</h2>
<p>Retraction pulls filament back before a non-printing travel move, then feeds it forward when printing resumes. Its main job is to reduce ooze between separate features.</p>
<p>Tune it when strings or travel scars remain after temperature and filament condition are under control. Change distance and speed in small steps, using a short repeatable test. Too little may leave strings. Too much can create gaps after travel, grind filament, or pull softened material into the wrong part of the hot end.</p>
<p>Direct-drive and Bowden setups do not use the same assumptions. Copying a popular value from a different machine can turn a minor string into a feed problem.</p>
<table><tbody><tr><td><strong>AXISBREAK RULE</strong><br>If the defect does not happen during travel, retraction is not the first setting to change.</td></tr></tbody></table>
<p><strong>04</strong></p>
<p><strong>SUPPORTS</strong></p>
<h2>Paint, Block, Then Tune</h2>
<p>Support material lets a printer build steep overhangs and features that would otherwise begin in mid-air. It also adds time, material, cleanup, and a rougher contact surface.</p>
<p>Rotating the model still comes first. Workshop 001 covered orientation, and a different face on the bed can remove entire support towers. Once orientation is settled, the support settings decide whether removal is clean.</p>
<p>Use build-plate-only support, painted support, and blockers so support grows only where the model needs it. Then check the interface layers and the gap to the model. A small interface gap that fuses will not come off clean, and too large a gap leaves a rough surface.</p>
<p>Preview the sliced layers. Check that critical islands are supported and contact points are reachable.</p>
<table><tbody><tr><td><strong>AXISBREAK RULE</strong><br>Placement and interface settings decide whether support comes off clean. Style is secondary.</td></tr></tbody></table>
<p><strong>05</strong></p>
<p><strong>FILAMENT</strong></p>
<h2>Check the Spool First</h2>
<p>Workshop 001 covered temperature towers, and a tower is still the right test. Run the spool check first, because no setting fixes wet filament.</p>
<p>If a spool that printed well suddenly strings, check moisture before rewriting a retraction or temperature profile. Drying a spool is often cheaper than re-tuning a profile around a wet one.</p>
<p>Brand, color, age, and nozzle wear can all change what works. Two spools of the same material from different batches can need different temperatures, and that is a material fact, not a slicer problem.</p>
<p><strong>Shop Note: </strong>Five minutes with a dryer or a fresh spool tells you more than an hour of profile tweaks.</p>
<p><strong>06</strong></p>
<p><strong>TUNING ORDER</strong></p>
<h2>Change One Thing, Learn One Thing</h2>
<ol>
<li><strong>Start with a trusted profile:</strong> Match the printer, nozzle diameter, and material. Confirm the first layer before tuning the rest.</li>
<li><strong>Choose the job:</strong> Decide whether the priority is detail, strength, speed, or easy cleanup. That choice guides layer height, walls, infill, and supports.</li>
<li><strong>Print a baseline:</strong> Use a small representative model or a section of the real part. Keep the default settings so you have something honest to compare.</li>
<li><strong>Fix one symptom:</strong> Change one relevant control, then print again. Filament condition before temperature, temperature before retraction, orientation before heavy supports.</li>
<li><strong>Save the result:</strong> Name the profile with the printer, nozzle, material, and purpose. A good setting you cannot identify later is not a repeatable process.</li>
</ol>
<h3>Stop touching settings that are not solving a problem</h3>
<p>These controls can be useful. They are simply low priority when a print already has a more obvious problem:</p>
<ul>
<li><strong>100% infill:</strong> It adds material, heat, and time, and it can create new stresses. Use it only when the part truly calls for a solid interior.</li>
<li><strong>Rafts on every print:</strong> A raft is a problem-solving tool, not a default. A clean bed, correct first layer, brim, or better orientation is often cheaper.</li>
<li><strong>Tiny speed changes everywhere:</strong> Adjust the feature that looks bad. One global number hides where the defect began.</li>
<li><strong>Advanced motion controls:</strong> Acceleration, jerk, and input shaping matter when you are calibrating the machine. They should not be random slicer guesses on top of a known-good profile.</li>
<li><strong>Changing five things at once:</strong> A successful print teaches you nothing if you cannot tell which change fixed it.</li>
</ul>
<h3>Three practical starting recipes</h3>
<p>These are starting points for a 0.4 mm nozzle with a tested material profile. Check your printer and filament limits before using them.</p>
<table><tbody><tr><td><strong>Goal</strong></td><td><strong>Layer</strong></td><td><strong>Walls</strong></td><td><strong>Infill</strong></td><td><strong>Priority</strong></td></tr><tr><td>Clean display part</td><td>0.16-0.20 mm</td><td>2-3 walls</td><td>5-15%</td><td>Minimize marks</td></tr><tr><td>Functional bracket</td><td>0.20-0.28 mm</td><td>3-5 walls</td><td>15-30%</td><td>Orient for load</td></tr><tr><td>Fast prototype</td><td>0.24-0.28 mm</td><td>2-3 walls</td><td>5-15%</td><td>Avoid support</td></tr></tbody></table>
<h2>Workshop Summary</h2>
<h3>The Fast Recap</h3>
<table><tbody><tr><td><strong>New ground covered</strong></td><td>Layer height, speed controls, retraction, supports, spool check, tuning process</td></tr><tr><td><strong>Difficulty</strong></td><td>★★☆☆☆</td></tr><tr><td><strong>Biggest takeaway</strong></td><td>One change, one lesson.</td></tr><tr><td><strong>Biggest myth</strong></td><td>More tuning means a better print.</td></tr><tr><td><strong>Best setting to change today</strong></td><td>First-layer speed.</td></tr></tbody></table>
<h2>Final Thoughts</h2>
<h3>There is no shortcut around testing.</h3>
<p>Every printer has its own quirks. Every filament behaves a little differently. Workshop 001 gave you the highest-impact settings. This one gave you the rest and the process.</p>
<p>Learn your machine, change one variable at a time, and let the parts tell you what works.</p>
<h2>AxisBreak Challenge</h2>
<h3>Change one setting on your next print.</h3>
<p>Compare the result. Take notes. Repeat. Great profiles are built by understanding your own machine, not by downloading someone else's and hoping for the best.</p>
<p>Print smarter. Build better.</p>
<p>Design • Print • Disrupt</p>
<p>If this Workshop saved you time or a failed print, share it with another maker and follow AxisBreak for more real-world testing and practical 3D printing guides.</p>
<table><tbody><tr><td><strong>PRINT SMARTER, NOT HARDER</strong><br>Read more practical 3D-printing guides at <a href="https://axisbreak.com/">axisbreak.com</a></td></tr></tbody></table>
<h2>Sources and further reading</h2>
<ul>
<li><a href="https://help.prusa3d.com/article/first-print-with-prusaslicer_1753">Prusa Knowledge Base, First print with PrusaSlicer</a></li>
<li><a href="https://www.bu.edu/eng/files/2022/10/prusa3d_manual_mk3s_en.pdf">Original Prusa i3 MK3S+ Handbook</a></li>
<li><a href="https://uwaterloo.ca/rapid-prototyping-centre/3d-printing/fdm-printing-information/prusa-fdm-printing-information">University of Waterloo Rapid Prototyping Centre, FDM printing information</a></li>
</ul>
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