Feed Speed Guides
CNC router feed rates that protect the tool, the spindle, and the finished part.
Feed rate is not a magic number. It is the result of tool diameter, flute count, spindle RPM, chip load, material type, depth of cut, hold-down, dust extraction, tool sharpness, and machine rigidity. Titan helps shops move beyond guessing and build repeatable feed-rate standards for MDF, melamine, plywood, hardwood, HPL, phenolic, plastics, and nested cabinet production.
The two formulas every CNC router operator should know.
Use these formulas as starting points. Final settings depend on the actual machine, material, tool geometry, depth of cut, hold-down, dust collection, and part size.
Feed Rate = RPM × Flutes × Chip Load
Example: 18,000 RPM × 2 flutes × 0.014" chip load = 504 IPM starting feed rate.
Chip Load = Feed Rate ÷ RPM ÷ Flutes
Example: 300 IPM ÷ 18,000 RPM ÷ 2 flutes = 0.0083" chip load.
A cutter that makes dust is usually rubbing. A cutter that screams is usually overloaded.
The sweet spot is a clean chip, stable sound, consistent edge quality, good part hold-down, manageable spindle load, and predictable tool life. Feed rates should be tested, documented, and built into the shop’s tooling library instead of reinvented on every job.
Send Us Your Cutting IssueStarting chip-load and feed-rate reference by material.
These are practical starting ranges for common woodworking CNC router conditions. Start conservative, test in scrap, inspect the chip, listen to the spindle, check edge quality, and adjust one variable at a time.
MDF / Particleboard / TFL
Common for nesting, cabinet boxes, closet parts, casework, and melamine production. Usually wants a real chip and strong dust extraction.
Plywood / Softwood Panels
Watch veneer tear-out, glue lines, internal voids, vibration, and sheet flatness. Compression bits are usually the first test.
Hardwood
Slower and steadier than MDF. Watch grain direction, burning, tear-out, tool deflection, and chip evacuation.
HPL / Laminate
Abrasive and chip-sensitive. Tool sharpness, geometry, climb/conventional strategy, and support matter heavily.
Phenolic / Compact Laminate
Dense, abrasive, and unforgiving. Reduce depth, use rigid setups, control heat, and expect faster tool wear.
Acrylic / Plastics
Heat control is everything. Use plastic-specific O-flute tooling, real chips, good evacuation, and avoid melting.
Tool type matters. The feed rate has to match the cutter geometry.
The same material may need different settings depending on whether the shop is using compression spirals, downcuts, upcuts, roughers, finish tools, O-flutes, V-grooves, ball nose tools, or spoilboard cutters.
Compression Bits
Best starting point for melamine, TFL, plywood, and laminated panels where top and bottom face quality both matter.
View Compression Bits →Downcut Bits
Pushes chips downward and can protect the top face, but may pack chips into the cut if evacuation is poor.
View Downcut Bits →Upcut Bits
Pulls chips upward and clears the kerf well, but can damage top veneers or melamine faces if not matched to the job.
View Upcut Bits →O-Flute Bits
Designed for plastics and acrylics where chip evacuation and heat control are critical.
View O-Flute Bits →Roughing Bits
Used where material removal rate matters. Final finish may require a separate cleanup pass.
View Roughing Bits →Ball Nose Tools
Used for 3D reliefs, curved machining, mold work, and finishing passes. Step-over becomes as important as feed.
View Ball Nose Bits →V-Groove Tools
Used for signage, grooves, engraving, chamfers, and decorative details. Tip size and depth heavily affect feed.
View V-Groove Bits →Spoilboard Cutters
Used to flatten spoilboards and restore vacuum performance. Feed depends on diameter, insert style, depth, and dust collection.
View Spoilboard Cutters →Depth of cut, vacuum, and dust collection change everything.
Feed charts assume a reasonable setup. A deep cut, poor vacuum, dirty spoilboard, weak dust extraction, small parts, dull tool, or long tool projection can require major adjustment.
Symptoms of wrong feed rate.
Operators should diagnose the cut by looking at the chip, the sound, the edge, the heat, the dust, and the tool after the cut.
Dust Instead of Chips
The cutter is rubbing instead of cutting. Increase feed, lower RPM, use fewer flutes, or inspect tool sharpness.
Burning or Heat
Common in hardwood, plywood, acrylic, and MDF when RPM is high and feed is too low.
Chatter
The cutter, spindle, sheet, or machine is vibrating. Reduce load, check hold-down, reduce projection, and inspect collets.
Broken Bits
Usually caused by excessive chip load, deep cut, poor hold-down, tool deflection, or feed too aggressive for the machine.
Top Chip-Out
May need compression, downcut, sharper tooling, better hold-down, different direction, or a finish pass.
Bottom Blowout
Common when the upcut length, compression transition, spoilboard support, or final pass strategy is wrong.
Melted Plastic
Use O-flute tooling, reduce RPM, improve chip evacuation, increase chip size, and stop rubbing.
Short Tool Life
Often caused by wrong chip load, abrasive panels, poor dust extraction, dirty holders, runout, or no tool-life tracking.
Build the full feed-rate system.
Feed-rate discipline should become part of the tooling library, operator training, maintenance routine, and production reporting system.
Build a Tool Library
Document tool diameter, flute count, material, RPM, feed, plunge, pass depth, finish pass, and expected tool life.
View CNC Tooling →
Control Chip Evacuation
Good feed rates still fail if chips stay in the kerf. Dust collection affects tool heat, cut quality, cleanup, and tool life.
View Dust Collection →
Measure the Real Result
Track edge quality, remakes, tool life, cycle time, operator notes, material defects, and actual feed settings by material.
Production Optimization →Send us the cut. We’ll help diagnose the feed, speed, and tooling issue.
Use this form when the CNC is burning tools, breaking bits, chipping melamine, fuzzing MDF, melting plastic, leaving chatter, moving small parts, creating bad edgebanding prep, or running too slow for production.
- Dust instead of chips.
- Burning, heat, or blackened tooling.
- Chatter, vibration, poor edge quality, or wavy cuts.
- Top-face chip-out or bottom-face breakout.
- Broken bits, short tool life, or excessive spindle load.
- Melting plastic, acrylic rewelding, or gummy chips.
- Small parts moving during nested cutting.
- Edges not ready for edgebanding.
- Production too slow for the shop’s required output.
Stop guessing at feeds and speeds. Build a tooling standard that the shop can repeat.
Send us your machine, material, cutter, RPM, feed rate, depth of cut, and the defect you are seeing. Titan can help diagnose whether the issue is chip load, tool geometry, hold-down, dust extraction, collets, material, or production workflow.