Collection 04

Metal & profiles

For whoever cuts bars, tubes and profiles to length — metalwork, aluminium and PVC window frames, shopfitting, frames and railings. How many bars a cut list really needs once the saw has taken its share, and what the order weighs.

Same rules as everywhere here: the method on the page, no sign-up, nothing uploaded, all of it computed in your browser.

Cutting · live

Linear cutting optimizer

A cut list against the bars you buy: the fewest bars, the saw kerf and end trim counted, offcuts on the rack used first, and the ones worth keeping marked. 54 pieces from 6 m bars in 10, the theoretical minimum.

Weight · live

Metal weight

Steel, aluminium, stainless, brass and copper: bars, tubes, angles, channels and sheet, per metre and for the whole order, with kg/m charts.

Sheet · new

Bend allowance and flat length

Sheet metal flat blanks: bend allowance, bend deduction and the bend lines from the flanges, thickness, inside radius and angle, with the K-factor from DIN 6935. A 50 × 100 × 50 U in 2 mm sheet is 192.33 mm flat.

What the cutting plan looks like

Cutting plan for bars: each bar drawn to scale with its pieces, the kerf and the offcut, identical bars listed once with how many to cut — The optimizer's own example: **54 pieces from 10 bars of 6000 mm**, the fewest possible for that list, with 1.4 % waste and four offcuts worth keeping. Open it with your list →

Why it sits next to the glass

Because the window maker who orders the glass also cuts the frame. The same people cut aluminium and PVC profiles from 6 m and 6.5 m bars every day, and lose whole bars to the saw and to offcuts too short to keep. The glass has its own two-dimensional optimiser; this is the one for the bars.