Guide · remnants

When leftover from a 6000 mm bar is remnant vs scrap

Minimum remnant length (MR) is a shop rule, not a solver mystery. On a mill-length aluminium or uPVC window bar, leftover at or above MR goes back to the warehouse. Shorter leftover is scrap. The 1068 mm remnant on the FeneCAM homepage is an illustrative public demo, not a recommended threshold.

What MR is on a 6000 mm window bar

MR (minimal remnant length) is the shortest leftover you will store and use later. The 1-CSP window-profile guide uses MR 1000 mm on 6000 mm stock. That is a worked example, not a factory default. Your rack, handling cost and next-job mix set MR. Kerf still comes off between cuts; MR does not replace kerf, left trim or right trim.

Run the same lengths in the 1D profile optimizer and change only MR. Bar count can stay the same while leftover labels flip from remnant to scrap.

Warehouse remnant versus scrap

	Remnant	Scrap
Rule	Leftover ≥ MR	Leftover < MR
Where it goes	Back to the warehouse / remnants rack	Bin; not stored as stock
Next job	Available as a shorter bar of the same material	Not offered as stock
Worked example (MR 1000)	1071 mm leftover on P2	51 mm leftover on P1

Those leftovers are from the six-casement plan in the 1-CSP guide: 12 × 1485 mm and 12 × 1230 mm on 6000 mm bars, kerf 3 mm, MR 1000 mm. P1 leftover 51 mm is scrap. P2 leftover 1071 mm is a remnant. That is not the homepage demo.

The homepage 1068 mm remnant is illustrative

The public homepage panel shows 12 bars, 94.1% yield, 5.9% waste and a 1068 mm remnant. That panel is a different BOM. It is not a study, not a yield claim, and not a recommended MR. Do not copy 1068 mm into the MR field because it appeared on the marketing screen.

Do not mix aluminium and uPVC remnants

Same 1-CSP method, separate stock lists. An aluminium leftover must not sit on a uPVC list, and the reverse. Reinforcement steel, glass and infill sheets are not bar remnants: glass belongs in 2-CSP. If you keep remnants, label them with the same material name you used on the job (example: Aluminum Profile 6060).

Machine mode (Single Head, Double Head or CNC) does not change whether leftover is remnant or scrap. That label comes from MR. See the double-head vs single-head guide and the CAM-to-saw handoff for how the same nest is grouped for the saw.

Choosing an MR for 6000 mm stock

1. Ask the shortest leftover the shop will actually rack and pick later.
2. Enter that length as MR. 1000 mm is a common starting point on 6000 mm window bars; 100 mm will label almost every leftover as remnant.
3. Keep one material per plan. Do not merge alu and uPVC remnants to “save a bar” on paper.
4. Re-export the cut plan after you change MR so the printed leftover labels match the rack.

1-CSP for 6000 mm window profiles Double-head vs single-head saws CAM-to-saw handoff Open the 1D profile optimizer