CNC SIGNMAKING, GASKET & DRAG KNIFE CAM
CNC Drag Knife & Scribe Pressure & Offset Calculator
Calculate blade tip caster offset radius, corner swivel pivot loop trajectory, spring preload downforce (grams), and feed rate limits for vinyl, leather, gasket rubber, and diamond drag engraving.
1. Tool Type & Caster Geometry
Distance from tool center of rotation to cutting blade tip.
2. Motion & Pressure Settings
Sharp corners exceeding this angle generate an external swivel loop.
Toolpath & Swivel Kinematics
Swivel Pivot Radius
1.80 mm
Min external corner arc
Corner Feed Rate
1,200 mm/m
Chatter reduction clamp
Spring Downforce
450 grams
Optimal cutting pressure
Stepdown Passes
2 Passes
Recommended cut layers
CASTER OFFSET & CORNER SWIVEL TRAJECTORY:
Swivel Arc Formula:
R_pivot = Blade_Offset × 1.20 | Offset_X = O × cos(θ)
Order Swivel-Compensated DXF Vector Bundles
SpotItLive converts standard vector artwork and raster logos into drag-knife compensated cut paths with automatic corner loops, lead-ins, and tangent extensions.
Get Drag-Ready Vector Pack (29 DKK)