Best Blades for Cutting Chipboard on Craft Machines

What is the difference between a standard fine-point blade and a deep-point blade for heavy materials?

A fine-point blade features a steep 45-degree angle designed for precision on light materials, whereas a deep-point blade uses a shallower 60-degree angle to withstand the high resistance of dense fibers.

Use these angles to match your blade geometry to the density of the board you're processing.

How does the thickness of chipboard affect the choice of cutting tool?

As chipboard thickness increases, the cutting tool must transition from a drag-style blade to a vertical-plunging knife blade to prevent the material from buckling under lateral pressure. Thinner sheets allow for higher speed, but once you exceed 1.0mm, you must prioritize slow, multi-pass cycles to avoid snapping the blade tip. Many people assume that simply increasing the pressure setting will force a standard blade through thick chipboard, but this only results in damaged motors and bent blade housings. Instead, you must switch to a tool geometry capable of handling the vertical stress of dense, compressed paper fibers.

Which specific machine settings are required to ensure a clean cut through dense chipboard?

Achieving a clean cut requires low-speed settings paired with multiple passes to allow the blade to clear debris from the channel.

• Pressure settings: Set your machine to the maximum force available for your specific model to make sure the knife blade penetrates the full thickness of the board.
• Speed adjustments: Reduce the cutting speed to the lowest possible setting to prevent the blade from skipping or tearing the edges of the chipboard.
• Multi-pass count: Program the machine for at least 4 to 8 passes depending on the board density to gradually carve through the material.
• Blade calibration: Perform a manual depth check before each session to verify the knife is not dragging across the mat surface.

When should a knife blade be used instead of a standard cutting blade?

Yes, a knife blade is necessary whenever the chipboard exceeds 0.5mm in thickness. Standard blades lack the structural integrity to handle the lateral force required to slice through these dense fibers, often resulting in a broken tip or a jagged, uneven edge after only a single pass.

How can you determine if a blade is becoming too dull to cut thick materials effectively?

A dull blade often leaves behind fuzzy, ragged edges or uncut fibers at the bottom of the board, signaling that the steel has lost its razor-sharp edge. You can verify this by inspecting the back of your chipboard; if you see significant fraying or the machine struggles to complete a shape, the blade is likely worn. For instance, if you notice the machine repeatedly stalls or makes a grinding noise during the final passes, it is time to replace the housing or the blade tip.

However, keep in mind that fraying does not always mean the blade is dull. Sometimes, the issue is simply a lack of sufficient pressure or an incorrect number of passes. Before discarding a blade, make sure your mat is clean and that the chipboard is secured firmly, as loose material can mimic the symptoms of a dull blade by shifting during the cut.

Are there specific adhesive mats recommended for securing chipboard during the cutting process?

Yes, use a high-tack or "strong grip" adhesive mat to secure chipboard during the cutting process. These mats are engineered with a specialized adhesive that holds dense materials firmly in place, effectively preventing the board from shifting under the high pressure required for a clean, professional-grade cut.

What safety precautions should be taken when using high-pressure cutting blades?

High-pressure cutting blades generate significant force, so always keep your fingers clear of the carriage path while the machine is active. Because these blades are essentially industrial-grade knives, they can easily slice through skin if they deflect off a hard spot in the chipboard or if the material slips unexpectedly. Always wait for the machine to return to its home position before attempting to remove the mat or clear any debris from the cutting area.

One exception involves the use of specialized safety guards or covers provided by the manufacturer. While these guards offer protection, they can sometimes obscure your view of the cutting process. If you must observe the cut to verify progress, use a flashlight from a safe distance rather than leaning over the machine, as small, sharp shards of chipboard can occasionally eject from the cutting path at high speeds.

How many passes are typically recommended to cut through various weights of chipboard?

The number of passes required depends on the density and thickness of the chipboard, with thicker materials requiring more iterations to achieve a full separation.

Use these pass counts as a baseline, adjusting upward if the blade fails to penetrate the bottom layer of the board.