Free CNC Tool Library: Feeds and Speeds for Vectric and Fusion

Every bit in this library is already loaded with the manufacturer's own published chipload — so you import once instead of typing tools in one at a time and guessing at feeds.

453router bits
9,439tool definitions
8materials
3manufacturers
Vectric VCarve & Aspire tool database CSV formatted for Vectric's tool database import — name, diameter, flutes, pass depth, stepover, spindle speed, feed and plunge for every bit and material combination. Download CSV 2.8 MB
Fusion 360 CAM tool library (JSON) Structured JSON with geometry, per-material feeds, chipload ranges and a link back to each product. Suits Fusion 360 and any CAM that reads a generic tool definition. Download JSON 5.0 MB
Spreadsheet Feeds & speeds reference chart Plain CSV for Excel, Sheets or printing and taping to the machine. One row per bit, diameter and material, with the chipload range it came from. Download CSV 2.2 MB

What's in it

453 router bits from LMT Onsrud, Amana Tool and Whiteside, expanded into 9,439 tool definitions — because a single bit gets a separate entry for each material and diameter the manufacturer published data for. Materials covered: softwood, hardwood, plywood, MDF, particleboard, acrylic, soft plastics and aluminum.

Every row carries the feed rate, plunge rate, depth of cut, stepover and a link back to the product page.

Two kinds of data are in here, and the Source column tells you which. LMT Onsrud and Amana publish chipload ranges per material, so those bits get a separate row for each material and diameter, and the row shows the range it came from. Whiteside publishes a single conservative starting point per tool with no material breakdown — those rows say "General (all materials)" and leave the chipload columns blank. Whiteside's figures run lower than Onsrud's for an equivalent bit; that is a difference in philosophy, not an error. Onsrud's are aimed at industrial production, Whiteside's at a lighter machine.

How the numbers were worked out

Value How it's derived
Chipload Midpoint of the manufacturer's published range for that bit, diameter and material. The full range is included so you can see the room either side.
Feed rate RPM × flutes × chipload. Nothing invented.
Spindle speed The bit's own rated maximum, capped by diameter — larger cutters are limited to lower RPM because rim speed climbs with diameter.
Plunge rate 40% of feed — a conservative starting point, not a manufacturer figure.
Depth of cut One bit diameter, capped at 1/2″. Reduce it for hard material, long reach or a light machine.
Stepover 40% of diameter for roughing.

Read this before you cut

  • These are starting points, not guarantees. Chipload is a property of the tool and material. Feed, depth and stepover also depend on your machine's rigidity, spindle power and hold-down — none of which we can see from here.
  • Verify on scrap first. Especially for depth of cut, which is the value most sensitive to your particular setup.
  • Feeds may be higher than you expect. That is usually correct. Under-feeding is the most common cause of burning, melting and fuzzy edges, because a bit taking too thin a chip rubs instead of cutting.
  • If your machine can't reach the feed, lower the RPM rather than crawling the feed. Chipload depends on the ratio, so both drop together and the chip stays the right size.
  • Bearing-guided profile bits cut to the profile's own depth, not to a programmed pass depth — treat the depth column as advisory for those.
Coverage note: 453 of our bits currently carry published feeds and speeds data. We are still adding it across the rest of the catalogue, and this library is regenerated as that grows. If a bit you run is missing, tell us and we will prioritise it.

Prefer to work it out for one cut?

The feed rate calculator does the same maths for a single bit and material. If something is already going wrong on the machine, the Cut Doctor will diagnose it from your parameters, and the Bit Finder will match a bit to the job.