Offcut Inventory
Every cutting job produces leftover material. A well-managed offcut inventory turns that leftover material into a resource — saving money on future jobs by reducing the amount of new material you need to buy. CutOptim’s offcut inventory tracks saved pieces from past jobs and makes them available as stock for future optimizations.
What is an Offcut?
An offcut is a piece of material remaining after all demand pieces have been cut from a sheet or bar. Whether an offcut is worth saving depends on its size relative to your typical piece sizes.
CutOptim classifies remaining material into two categories:
| Category | Criteria | Shown on canvas | Saveable to inventory |
|---|---|---|---|
| Offcut | Larger than the minimum offcut size (set in Settings) | Hatched pattern | Yes |
| Waste | Smaller than the minimum offcut size | Solid grey | No |
The minimum offcut size is your threshold for “is this piece worth storing?” Set it in Settings.
A reasonable starting point for minimum offcut size is 200×200 mm for sheet goods and 300 mm for linear materials. Adjust based on your typical job requirements — if you regularly need small pieces for edge banding repairs or pocket holes, lower the threshold.
Saving Offcuts to Inventory
After running an optimization, offcuts are listed in the results panel with their dimensions and area. You can save any or all of them to your inventory.
- 1
Run your optimization
Complete a 2D, 1D, or Wood optimization as normal. CutOptim calculates which remaining pieces qualify as offcuts based on your minimum offcut size setting.
- 2
Open the Offcuts tab in the results panel
At the bottom of the canvas, click the **Offcuts** tab in the results panel. You will see a list of all offcuts identified in the run, with their dimensions, area, and which sheet or bar they came from.
- 3
Select offcuts to save
Check the boxes next to the offcuts you want to keep. You can select all with the checkbox in the table header. Deselect offcuts you do not want to store (very narrow strips, awkward shapes, material you do not plan to use again).
- 4
Click Save to Inventory
Click the **Save to Inventory** button. The selected offcuts are added to your Offcut Inventory with their dimensions, the source job, and today's date.
- 5
Label your physical offcuts
Write the piece dimensions and CutOptim reference number on the physical piece with a marker, or print labels using the Panel Labels export (Pro feature). Store the material with its label so you can find it by size when it is needed.
Viewing and Managing the Inventory
Open the Offcut Inventory panel by clicking the Inventory icon in the left sidebar (or via the top menu: Tools → Offcut Inventory).
| Feature | Type | Description |
|---|---|---|
| Label | text | Name or reference for the offcut piece. Auto-generated from the source job and sheet number, but editable. |
| Width | number | (2D mode) Width of the stored piece. |
| Height | number | (2D mode) Height of the stored piece. |
| Length | number | (1D/Wood mode) Length of the stored piece. |
| Material | text | Optional material description, e.g. '18mm Birch Ply' or '90×45 MGP10'. |
| Saved date | date | When this offcut was added to inventory. |
| Source job | text | The project and cut this offcut came from. Click to open the source cut. |
| Notes | text | Free-text notes, e.g. 'has minor scratch on face', 'pre-primed one side'. |
Filtering and Searching
Use the search bar and filter controls at the top of the inventory panel to find specific offcuts:
- Filter by material — Type a material keyword to filter rows
- Filter by minimum size — Show only offcuts of at least a certain size (useful when you need a specific large piece)
- Sort by — Size (largest first), date (most recent first), or label (alphabetical)
Using Inventory Offcuts in a New Job
Saved offcuts can be used as stock in any future optimization.
- 1
Start a new cut
Create a new project or open an existing one and set up your demand pieces as normal.
- 2
Add stock from inventory
In the Stock table, click **Add from Inventory** (the small icon to the right of + Add Stock). The inventory panel opens as a selector.
- 3
Select offcuts to use
Browse or search for offcuts that match your material requirements. Select the ones you want to use as stock. Each selected offcut is added to the Stock table with quantity 1 and its stored dimensions.
- 4
Run the optimization
Run as normal. CutOptim will attempt to place demand pieces on the inventory offcuts first (since they represent material you already have) before moving to new stock sheets.
- 5
Update inventory after the job
After the job is cut and verified, return to the Offcut Inventory and mark the used offcuts as consumed. Partially used offcuts can have their dimensions updated to the remaining size and kept in inventory.
Add inventory offcuts to your stock table before adding full new sheets. CutOptim will prioritize filling offcuts before opening new sheets, maximizing your use of existing material.
CSV Import and Export
Exporting the Inventory
Click Export CSV in the Offcut Inventory panel to download your entire inventory as a CSV file. This is useful for:
- Backing up your inventory data
- Sharing the inventory with a colleague or another CutOptim account
- Creating a reference document for your physical material storage
Importing from CSV
If you have an existing offcut list in a spreadsheet, import it with Import CSV. The required columns are:
| Column | Required | Description |
|---|---|---|
label | Yes | Piece name or reference |
width | 2D only | Width in mm or cm |
height | 2D only | Height in mm or cm |
length | 1D/Wood only | Length in mm or cm |
material | No | Material description |
notes | No | Additional notes |
Download the CSV template from the Import dialog to get the correct column headers and an example row.
Clearing the Inventory
Over time, some inventory items become irrelevant — material was used without updating the inventory, pieces were damaged, or they are simply too small for current jobs. Periodically clean up the inventory:
- Open the Offcut Inventory panel
- Review items not used in the past 90 days (filter by last-used date)
- Check items manually and remove those that are no longer physically available
- Use Select All + Delete Selected to bulk-remove stale entries
Deleting an inventory item only removes it from CutOptim’s database. It does not affect any past job data. You can always re-add an offcut to inventory manually if needed.