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Pieces per bar, bars for demand and 1D nesting with kerf, remainder, weight and indicative material cost.
Bar and cut-off
Measure it by driving the pusher fully in and measuring from the parting tool to the collet stop. The real remnant can run up to one part pitch over the minimum.
Material, weight and cost
C45 bonus steel · dens. 7.85 g/cm³ · barra ≈ 16.647 kg · Datasheet
Result
Pitch ≈ 48 mm/part · usable 2880 mm
Production
Raw parts / bar
60
Good parts / bar
59
−1 scrap
Used
2880mm
Left over
120mm
Reusable remnant
Material yield
96%
Relative waste
4%
Weight ≈ / good piece
0.2822kg
bar 16.647 kg
Bar layout · min. remnant 120 mm
60 partskerf included in the pitchremnant 120 mm
What you throw away every year
The material €/kg is missing; it is in the material, weight and cost panel.
Which bar suits you
| Bar | Parts | Usage | Left over |
|---|---|---|---|
| in use | 59 | 96 % | 120 mm |
| 72 | 95.8 % | 154 mm | |
| 79 | 96 % | 160 mm | |
| best | 121 | 97.6 % | 144 mm |
| 123 | 97.6 % | 144 mm |
The same part in the lengths your supplier sells, with your kerf and your remnant. Click one to use it. Enter the €/kg and you will also see the cost per part of each one.
Go from "how many come out of a 3 m round bar?" to bars needed, nesting of several lengths, bar-feeder remnants and material cost with the waste priced in euros. Made for turners, saws and stock planning.
Enter L, kerf, end trim, remnant and setup scrap. You get parts per bar, usage, what is really left over (counting the last bar, which is almost never used up) and, if you enter a demand, how many bars to order. The table compares the same part in 3 m, 12 ft, 4 m, 6 m and 20 ft to see which comes out cheaper.
List lengths and quantities. The algorithm spreads them over bars of the same length minimising bars used (First-Fit Decreasing), with the per-length count of each bar and a printable cutting plan for the saw.
Pick shape and material from the catalogue for bar and part weight and €/part from €/kg or €/bar, with the scrap credit deducted and what you throw away each year priced in euros.
How many parts fit on a bar (with kerf, end trim and remnant), how many bars you need for a demand, and light 1D nesting if you have several lengths. It compares bar lengths to see which is cheaper per part, puts what goes into offcuts in euros and prints a cutting plan for the saw. Also weight and material cost from the GetGCode catalogue.
It is the material lost in every cut (width of the parting insert, band or disc). If you don't add it, the last part doesn't fit. On lathes the insert width is typically used; on saws, 1.5–3 mm is typical.
Per piece (conservative): each piece consumes L+kerf, typical in CNC parting. By cutting (saw): n pieces consume (n−1) kerfs between them. Choose the one that matches your process.
Length that you do not use because of clamps, stops or because it is not worth saving. Leftovers below that threshold are considered scrap; above, reusable remnant.
No. It uses First-Fit Decreasing on bars of the same length: fast and useful in the shop. For multi-stock, offcut inventory and shop-floor PDFs, tools like Cutlistor/CutOptim go further.
It depends on the feeder and it is measured: drive the pusher fully in and measure from the parting tool to the collet stop. For reference, LNS Alpha units allow up to 400 mm, IEMCA Boss run from 70 to 295, and Swiss type work is usually 150 to 300. Watch out for something almost nobody mentions: the real remnant can run up to one part pitch over the minimum, because the last part that does not fit stays on the bar. If you work with a guide bush, tick the box and one bar diameter is added.
The table below answers it with your part, your kerf and your remnant: parts per bar, usage, what is left over and the cost per good part for each length, including 12 and 20 ft. The long bar does not always win: with a long part, the leftover at the end can eat the advantage. Click the one you want and everything is recalculated with it.
Enter the price per kilo and the parts you make per year and you will see it in euros: kerf, end trim, remnant and the setup parts, added up and priced. If you sell the scrap, enter its price too and the credit is deducted. It is the same number the tool already worked out, told the way the office understands it.
No: material only (price per kg or per bar). If you enter what they pay you for the scrap, the credit is deducted and you see the net cost. Labour, tooling and process waste go separately.
Real two-channel cycle time by critical path (M100, P, WAITM and !L waits), transfer review, main→sub pick-off routine with your own codes, parting/length setup and Z1/Z2.
Instant machining quote: material, machine time, setup per batch, secondary operations and margin. Free, no sign-up.
