GB Nest is a Windows-native nesting application that packs DXF and DWG parts onto sheets with industry-grade efficiency. A real No-Fit-Polygon contour engine, multi-threaded genetic optimiser, and hole nesting - features normally reserved for nesters costing many thousands per seat.
GB Nest ships three engines, each tuned for a different point in the speed / quality trade-off. Switch between them in one click as the job demands.
Fast bin-packing for simple shapes and tight deadlines. Hundreds of parts placed in seconds - perfect for estimates or near-rectangular jobs.
True No-Fit-Polygon contour packing using the exact polygon outline. Concave shapes like L-brackets, C-channels, triangles and curves pack flush against each other.
Time-budgeted genetic search that runs Contour Nest hundreds of times to find the absolute best layout. Typically 5-15% more efficient than a single-pass nest.
When a placed part has a closed interior contour - a washer ring, a window cut-out, a perforation - GB Nest finds small parts that fit inside and places them there. Increases utilisation 5-30% on jobs with holey parts, common in sheet metal, signage, and decorative cutting.
The optimiser dialog shows live mini-preview that repaints on every improvement, per-worker thread status, time elapsed and remaining, and a list of best-so-far snapshots you can pick from. Set a time budget; get a result inside it, every time.
Wherever sheets get cut and material costs add up.
Steel, aluminium, copper, brass. The contour nester handles the irregular outlines common in brackets, gussets, and mounting plates.
Acrylic, MDF, foam, wood. Fine rotation refinement squeezes every part out of every sheet - critical at small batch sizes.
Rubber, paper, cork, leather. The hole-nesting feature alone often pays for the software on the first job.
Multi-sheet auto-fan handles long-roll workflows where the "sheet" is a continuous strip of expensive material.
Clean DXF output with preserved layers means your downstream CAM software sees machine-ready geometry.
Real material cost figures and one-click PDF reports for every quote, every customer, every job.
7-day free trial. No credit card - just register your email. Single EXE - download, unzip, run.