Dan Johnson IV / Dan先生
PRACTICAL TOOLS FOR MAKERS AND CREATORS.
Calculate first. Print second.
Free planning tools. Validate assumptions against your actual printer, slicer and production data.
Scale Conversion Calculator
Resize % = original scale denominator / target denominator × 100. Volume scales by the cube of the ratio.
3D Printing Cost Calculator
Material, machine and consumable costs use a full failed-attempt allowance: per-attempt cost / (1 − failure probability). Finishing labor is added once. Excludes tax, shipping, overhead and profit.
Production Margin Calculator
Contribution = price − production cost − fees − other cost. Margin = contribution / price. Markup = contribution / total cost.
Large Model Planner
Bounding-box estimate only. Section counts multiply the rounded-up dimension/build-volume ratios. Verify orientation, supports, joint clearance and actual splits in CAD. Use one consistent material unit.