Free · Test material and kerf before a full cut

Finger Joint Fit Test Maker

Make two small joint strips with stepped clearances so you can find the fit your cutter needs.

Real measured 2D CAD
Private in your browser
SVG, DXF, and model JSON

Set the measurements

The live drawing and every download use millimetres.

Exact sizesMove a slider or type a number.

Strip length150 mm

Strip height35 mm

Material thickness3 mm

Starting clearance0.1 mm

Clearance step0.05 mm

Test slots7

Cut a small test first. Real kerf and material thickness can change the fit.

CAD previewDrawing the starter template

Cut edge Hole or opening Guide or score

Making the drawingMaker.js is measuring every line and curve.

Width—

Height—

Paths—

Line length—

Your measurements stay in this browser tab.

Three simple steps

How to use it

Set the measurements for your fit test.
Check every cut, hole, and score line in the live drawing.
Download SVG or DXF and test it with scrap material first.

Your measurements stay on this device

Maker.js draws and measures the template inside this browser tab. Bookify does not upload or save the design. Check units, kerf, and material fit before a final cut.