Last updated: October 2026

When a Silhouette Cameo is not cutting all the way through, the cause is usually one of five things: a dirty or worn blade, the wrong tool selected in the Send panel, a material setting that is too light, a mat that has lost its grip, or a blade that is not seated properly. Work through them in that order, run a small test cut after each change, and raise force or add a pass before you jump to a deeper blade. That last rule comes straight from Silhouette America’s own cutting advice.

This guide uses Silhouette Studio 5.x menu names from the Studio 5.0 user manual. The Cameo 3, 4 and 5 series all use the same Send panel concepts.

Step 1: Clean and reseat the blade

Silhouette’s blog checklist for cleaner vinyl cuts starts with the blade. It says to “remove the blade and check for tiny vinyl pieces around the tip,” make sure the cap is secure, the blade is fully seated in the carriage, and the lock is closed.

  1. Open the tool holder lock and lift the blade out.
  2. Look at the tip. Any vinyl, paper fluff or adhesive stuck there can stop the blade reaching full depth.
  3. Clean it off, put the blade back, push it all the way down and close the lock.

A blade sitting even slightly high will skim the surface. This is the fastest fix to try and costs nothing.

Step 2: Check the tool selected in the Send panel

The AutoBlade adjusts its own depth. Silhouette’s AutoBlade product page describes “automatic depth adjustment” based on the software setting. That only works if the software knows an AutoBlade is loaded.

  1. Open the Send panel in Silhouette Studio.
  2. Confirm the tool shown for your tool holder matches the blade actually in the machine.
  3. If you use a manual (ratchet) blade, set its depth by hand to the number Studio suggests. The Studio 5 manual explains that for manual blades the software “will not know what blade level you are actually using,” so the number it shows is a visual cue you must set yourself.

Silhouette’s site lists the AutoBlade as compatible with the Cameo 3, 4, 4 Plus and 4 Pro, the Cameo 5, 5 Plus, 5 alpha and 5 alpha Plus, the Cameo Pro MK-II, the Curio 2 and the Portrait 2, 3 and 4.

Step 3: Pick the right material setting

In the Send panel, choose the material that matches what you loaded. Silhouette’s blog notes that a mismatch between the physical setup and the software setting is one of the four things to check before cutting a full sheet. Glitter iron-on, for example, has a much higher published force than smooth iron-on in the table below, so cutting it on the wrong setting leaves it partly attached.

Silhouette America’s blog publishes these starting points:

MaterialBladeSpeedForcePasses
Removable matte vinyl15101
Smooth heat transfer vinyl2841
Glitter heat transfer vinyl35331

Treat these as a starting point, and always test cut. Our cut settings reference collects more published settings by machine and material.

Step 4: Adjust force, speed and passes in small steps

If the cut almost works, adjust gradually. The Studio 5 manual says that when setting cut conditions manually you should “set the speed to slow and the force to low, and if it is not enough, gradually increase the setting.”

What each setting does, according to the manual:

  • Blade depth: set so the blade “slightly protrudes from the medium in the thickness direction.” Too little depth leaves material uncut.
  • Speed: slower speeds may be recommended for thicker materials or intricate designs.
  • Force: set it according to the thickness of the material. Thicker materials need more.
  • Passes: increase the number of passes “when cutting thick or hard media.”

Silhouette’s blog adds the key order of operations: “Start with small force adjustments before making big blade-depth changes.” It also warns that “too much blade can score the backing, scar the mat, or damage the cutting strip during matless cutting.” If corners tear, lower speed first. If the material needs more time, add a second pass rather than forcing one aggressive pass.

A sensible sequence:

  1. Raise force a few steps and test.
  2. If still not through, add one pass and test.
  3. Only then raise blade depth by one step and test.

Step 5: Turn on the right helpers

Two Send panel options in the Studio 5 manual help with specific kinds of incomplete cuts:

  • Line Segment Overcut. The manual says turning it on cuts straight corners “with a slight overcut,” which helps with thicker or denser materials such as chipboard and with small block fonts or sharp-edged images. It has no effect on rounded edges. Use it when the straight lines cut but the corners stay attached.
  • Track Enhancing. This rolls the material in and out several times before cutting so the rollers grip a track. The manual says to use it only if it is pre-selected for your material or if the material is slipping and cuts come out misaligned. Misaligned passes can look like an incomplete cut because the second pass misses the first.

Step 6: Check the mat or matless setup

A mat that no longer holds the material lets it lift or shift under the blade, and lifted material does not cut cleanly.

Silhouette’s mat page explains the tack levels: standard tack is for heavier materials like cardstock and vinyl, and light tack is for thin or delicate materials like printer paper and tissue paper. To restore stickiness, Silhouette says to rinse the mat under lukewarm water, rub off debris with your fingers, avoid soap and household cleaners, and let it air dry. It recommends replacing the mat when deep blade grooves cause material to shift or when cleaning no longer restores enough tack.

If you are cutting without a mat, make sure the loading option in Studio matches what you physically did. Silhouette’s blog lists matching the mat or loading method to the software setting as one of its four pre-cut checks.

Step 7: Run a test cut after every change

The Studio 5 manual recommends a test cut whenever you cut a new material type. The steps it gives:

  1. In the Send panel, finish your cut settings.
  2. Click Generate Test Shape to place the test shape.
  3. Click Send Test. The machine cuts a small square with a triangle inside.
  4. Weed it. Silhouette’s blog says to check three things: the vinyl weeds cleanly without tearing, the backing or carrier is intact (light marks are fine), and corners are sharp without ragging.
  5. Adjust and repeat until it passes. Remove Test Shape deletes the test from the layout.

Step 8: Replace a worn blade

If a clean, properly seated blade still will not cut through on the right settings, it is probably dull. Silhouette’s tools page lists the signs: “ragged or uneven cut edges, the machine no longer cutting all the way through the material, vinyl tearing instead of cutting cleanly, and difficulty weeding even simple designs.”

On replacement timing, the same page says heavy users cutting thick materials daily may need a new blade every few weeks, while occasional crafters can often go several months. Silhouette listed the AutoBlade at about $12.99 regular price, on sale for $10.39 (October 2026).

Step 9: Update Silhouette Studio and check firmware

Keeping software and firmware current is the last check. The Studio 5 manual notes you can set how often the program checks for updates under Preferences > General (Edit > Preferences on a PC, Silhouette Studio > Preferences on a Mac). Silhouette also publishes firmware release notes for each machine on its software release notes page, and its support center has a Firmware Troubleshooting section. If none of the steps above fix the problem, update both and contact Silhouette support at the address in the manual.

FAQ

Why does my Cameo cut some parts of the design but not others? Usually debris on the blade, material lifting off a tired mat, or a misaligned second pass. Clean the blade, check the mat’s tack, and turn on Track Enhancing if the material is slipping.

Should I just set the blade deeper? Not first. Silhouette’s blog says to make small force changes or add a pass before big depth changes, because too much blade can score the backing and damage the mat or cutting strip.

How many passes should I use? The manual says to increase passes for thick or hard materials. For standard vinyl, Silhouette’s published starting points use one pass.

How do I know the blade is worn out? Silhouette lists ragged edges, cuts that no longer go all the way through, tearing vinyl and hard weeding as the signs.

Does Line Segment Overcut help with incomplete cuts? Only at sharp corners. The manual says it has no effect on rounded edges.

Sources