3D Block Size Viewer
Visualize what size aluminum block you need. Enter your part dimensions and see a 3D preview of the raw stock required. Select alloy, adjust stock allowances, and see weight estimates.
Last updated April 2026
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Compare every aluminum plate alloy we stock, or go straight to yours. Cut to your size, with mill certs on every order.
Frequently Asked Questions
How do I determine raw stock size?
Start with your finished part dimensions, then add machining allowance (typically 0.050-0.125" per side for milling), saw kerf (0.08-0.125" per cut), and fixturing allowance if using a vise (0.5-1.0" extra length for clamping). Round up to the nearest standard plate thickness. This tool automates that calculation and shows the resulting block in 3D.
What machining allowance should I add?
For general CNC milling of aluminum, add 0.060-0.100" per side for roughing and finishing stock. Thicker plates and castings may need more (0.125-0.250") to clean up warpage or surface imperfections. For precision work requiring stress relief between operations, add 0.150" or more per side to allow for material movement after rough machining.