Fabrication & Workshop calculators
Choose a task below. Check each calculator’s assumptions and units before using its result.
3D Printer Filament Drying Guide - Drying Temps & Times
Optimal drying temperatures, hours, and RH hygrometer targets for 3D filaments.
Air Compressor Pump-Up Time & CFM Output Tester - FAD
Test and calculate true Free Air Delivered (FAD CFM and L/min) by timing tank pressure rise from cut-in to cut-out.
Ball Nose End Mill Effective Diameter & SFM Calculator
Calculate true effective cutting diameter ($D_{eff} = 2sqrt{a_p(D - a_p)}$), compensate spindle RPM to prevent cutter rub, and calculate 3D contour scallop cusp height.
Board Feet Calculator - Lumber Volume & Cost Sizing
Calculate hardwood lumber volume in board feet (BF), estimate waste margins, and calculate total job cost based on board price.
Book Spine Width Calculator - Page Count & Paper Caliper
Determine exact spine width in inches and millimeters for perfect-bound paperbacks and hardcovers based on page count and paper stock caliper.
Boring Bar Deflection & L/D Overhang Ratio Calculator
Calculate internal turning boring bar bending deflection ($y = F_c \cdot L^3 / (3 E I)$), dimensional taper error, chatter risk, and compare Steel vs Carbide.
Centerless Grinding Regulating Wheel & Through-Feed
Calculate regulating wheel forward feed velocity, optimize tilt angles and RPM, set work-rest blade heights to eliminate tri-lobing, and forecast hourly part output.
Deep Hole Gun Drilling Coolant Pressure & Flow Calculator
Determine critical cutting oil pressures and flow rates to prevent chip packing and catastrophic drill seizure across extreme length-to-diameter (L/D) aspect ratios.
Drill Bushing Press Fit & Slip Renewable Tolerance
Determine precision reamed hole dimensions, interference fit ranges, insertion force, and drill bit running clearances per ANSI B94.33 and ASME standards.
Engine Cylinder Honing Crosshatch Angle Calculator
Coordinate spindle rotational speed and vertical stroking velocity to achieve precise crosshatch angles and optimal plateau surface finish for piston ring seating.
Face Grooving & Trepanning Clearance Calculator
Determine tool blade curvature clearances to prevent workpiece collision, calculate D_min and D_max limits, size maximum axial plunge depths, and optimize feed rates.
Face Milling Spindle Power, Cutting Torque & MRR Calculator
Calculate Material Removal Rate (MRR), cutting torque, spindle horsepower, and tangential cutting force based on specific cutting energy ($k_c$) and face mill geometry.
Flywheel Moment of Inertia & Energy Storage Calculator
Calculate mass moment of inertia (J), rotational kinetic energy (Joules), released punching energy, and centrifugal rim hoop burst stress for mechanical flywheels.
Free 2x72 Belt Grinder SFM & Pulley Calculator
Calculate belt surface speed (SFM & m/s) from motor RPM and drive wheel diameter to optimize metal removal and prevent burning knife steel.
Free 3D Filament Remaining Length Calculator
Weigh your filament spool on a kitchen scale to instantly calculate remaining meters, net filament weight, and slice print time left.
Free 3D Print Cost Calculator
Calculate filament weight, electricity cost, machine wear, and total print pricing.
Free 3D Printing Volumetric Flow Rate Calculator
Calculate melted filament throughput in mm³/s and find the absolute maximum print speed before your hotend underextrudes or clicks.
Free Bandsaw Blade Length & Speed Calculator
Calculate bandsaw blade loop cut length, blade speed in SFM from motor pulley ratios, and optimal TPI tooth pitch.
Free Bandsaw Box Lumber Yield & Cut Depth Calculator
Calculate front & back face slice thickness, drawer cavity interior dimensions, blade kerf waste, and net storage volume for solid hardwood blanks.
Free Belt Length & Pulley Center Distance Calculator
Calculate pitch length, center-to-center distance, drive speed ratio, and minimum teeth-in-mesh for synchronous timing and V-belts.
Free Block and Tackle Pulley Calculator
Calculate mechanical advantage (MA), required pulling effort force, friction loss across sheaves, and total rope pull length.
Free Bolt Preload & Tightening Torque Calculator
Calculate fastener tightening torque, proof clamping preload, tensile stress area, and thread friction K-factor across Metric and SAE grades.
Free Box Joint Finger Spacing Calculator
Compute exact finger count, adjusted pin and socket dimensions, flush trim cut depth, and dado blade indexing step distance for seamless woodworking joints.
Free Brazing Joint Clearance Calculator
Calculate optimal capillary joint clearance, thermal expansion differences between dissimilar metals, and required lap overlap length.
Free Center Drill Depth & 60-Degree Chamfer Calculator
Calculate exact CNC Z-depth travel for 60° center holes, tailstock center bearing contact, and combined drill-countersink sizing per ANSI B94.11M.
Free CNC Feeds and Speeds Calculator
Calculate spindle RPM, feed rate, and chip load for wood and aluminum milling.
Free CNC Plasma Kerf Width & Torch Offset Calculator
Determine cutting kerf width, CAM toolpath center offset, CW/CCW cut direction, pierce delay, and travel speed for precision CNC plasma cutting.
Free CNC Stepover & Scallop Height Calculator
Calculate 3D ball-nose cusp scallop height, stepover distance, and surface roughness (Ra) for CNC milling and mold finishing.
Free CNC Stepover Calculator
Calculate peak scallop cusp height, theoretical surface roughness, and optimal stepover percentage for ballnose 3D relief carving.
Free Counterbore & Pilot Hole Calculator
Look up socket head cap screw dimensions, calculate counterbore diameter, counterbore depth, and pilot through-hole clearance for imperial and metric fasteners.
Free Dovetail Milling Cutter Depth & Width Calculator
Calculate male and female dovetail machine way dimensions, depth of cut, throat clearances, and precise micrometric measurement over pins/wires.
Free Dovetail Slide Width Over Pins Calculator
Calculate exact micrometer measurement dimensions over pins (male slide) and between pins (female way) for 60°, 55°, and custom angle dovetails.
Free Drill Point Depth & Breakthrough Calculator
Calculate drill point tip height, CNC program Z-depth to reach full cylindrical diameter, and breakthrough clearance past the bottom surface for through-holes.
Free Drill Press Speed (RPM) & Feed Rate Calculator
Calculate optimal drill press spindle RPM, cutting speed (SFM), and feed rates across steel, aluminum, brass, and timber.
Free Drill Tap Size Calculator
Find the optimal tap drill bit size, compute exact thread engagement percentage, and avoid broken taps in hard metals.
Free EDM Spark Gap & Overcut Calculator
Calculate dielectric spark gap overcut per side, total electrode undersize allowance for roughing & finishing, pulse discharge energy, and volumetric metal removal rates.
Free End Mill Deflection & Surface Finish Calculator
Calculate cutting tool deflection, wall taper error, and cantilever bending forces based on stickout length, chip load, and material machinability.
Free Fly Cutter Surface Finish & Scallop Calculator
Calculate peak-to-valley cusp height, surface roughness ($R_a$), table feed rate, spindle RPM, and surface speed for large-sweep fly cutter heads.
Free Flywheel Kinetic Energy & Inertia Calculator
Calculate mass moment of inertia, stored rotational kinetic energy, rim surface velocity, and centrifugal burst stress for flywheels.
Free Gear Backlash & Center Distance Calculator
Calculate normal and transverse backlash, determine tooth thinning requirements, and analyze the impact of center distance deviations on spur and helical gears.
Free Gear Ratio Calculator
Calculate total reduction ratios across multi-stage gear trains, determine final output RPM, and calculate torque multiplication.
Free Hydraulic Cylinder Force Calculator
Calculate extension push force, retraction pull force, rod displacement, operating tonnage, and fluid velocity.
Free Hydraulic Cylinder Tonnage & Speed Calculator
Calculate cylinder push & pull force (tons), stroke cycle times, fluid displacement (gallons), and required drive motor Horsepower (HP) from PSI and GPM.
Free Keyway Broaching & Slotting Calculator
Calculate ANSI B17.1 & DIN 6885 standard keyway dimensions, bore arc chord height compensation, caliper inspection depths, and broach shim passes.
Free Laser Cutter Kerf & Speed Calculator
Calculate laser spot diameter, vector kerf compensation offsets, and feed speed estimates for press-fit finger joints and inlays.
Free Lathe Taper Turning Angle Calculator
Calculate compound rest swivel angle in degrees & minutes, Taper Per Foot (TPF), and tailstock offset for manual lathe machining.
Free Lathe Taper Turning Calculator
Calculate the compound rest swivel angle ($ heta = arctan[(D-d)/(2L)]$) and tailstock lateral set-over distance ($s = L_{total} cdot (D-d)/(2L)$) for precision taper machining.
Free Lathe Taper Turning Calculator
Calculate compound rest swivel angle, tailstock setover offset, taper per foot (TPF), and metric taper ratios for manual and CNC lathe machining.