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Machinist Resources & Buying Guides
Search our free machinist resources hub for tool identification charts, machine tool buying guides, machinist reference charts, speed & feed guides, deep-dive product category pages and more.
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Charts & tools
Start here when you are holding a part you cannot identify, or a list you need priced.
Carbide Insert Identification Chart
Decode any ISO 1832 insert part number position by position — shape, clearance, tolerance, inscribed circle, thickness and nose radius — plus the six carbide grade groups.
OpenFull Surplus Catalog
Every in-stock listing with brand, condition, piece count and real savings against list. Filter by category, diameter, material, flute count and shank size.
OpenQuick Order & PO Upload
Paste a part-number list or upload a purchase order and we quote it back. Phone, text, email and web orders all land in the same queue.
OpenTurning insert cluster
Inserts are our deepest category, so they get their own set of pages: the identification chart decodes the part number, the CNMG vs WNMG vs TNMG guide explains which shape wins which job, and each shape page below lists what is on the shelf today.
CNMG inserts
80° diamond — the heavy-roughing workhorse.
4 usable corners · Roughing, interrupted cuts, forged or scaled stock, big depths of cut.
Shop CNMGWNMG inserts
80° trigon — six edges, best cost per part.
6 usable corners · Medium turning and facing on production runs where cost per edge rules.
Shop WNMGTNMG inserts
60° triangle — the profiling specialist.
3 (to 6) usable corners · Profiling, shoulders, tight corners and combined turn-and-face passes.
Shop TNMGDNMG inserts
55° rhombic — profiling and copy turning.
4 usable corners · Profiling, copy turning, contours and back-turning where reach matters.
Shop DNMG
Shop by tooling type
Each section carries its own buying notes above and below the product grid. See every category with live counts →
Surplus sourcing & selling
Machine Shop Closeouts
Condition grades explained, what every lot record publishes, and the closeout lots on the shelf right now.
Hidden Gems
Twelve hand-picked new-surplus and hard-to-find items, refreshed as lots move.
Sell Your Surplus
Turn idle tooling and shut-down inventory into cash — free pickup, fast quotes.
Shipping & Lead Times
Same-day Wisconsin shipping, Central time cut-offs, and free ground over $250.
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