Select the tip shape based primarily on your material's thickness, its density, and your cutting method (oscillating vs. drag knife). The tip geometry governs cut quality, tolerance for tight corners, and whether you experience material tearing or edge-crushing.
To match the appropriate carbide blades for machines like Aristo, Esko Kongsberg, or MultiCam, use the following guidelines:
1. Single-Edge Round (SR Series)
- Tip Profile: Straight edge with a centered, single-sided angle.
- Best for: Standard, thin materials and multi-ply cutting. Excellent for vinyl banners, self-adhesive vinyl, folding carton, technical canvas, and thin foam board.
- Advantage: Delivers low "overcut" lag so the tool tracks perfectly through small radii and intricate details without tearing.
2. Double-Edge Round (DR Series)
- Tip Profile: Two cutting edges terminating at a centered tip.
- Best for: Heavy-duty applications. Ideal for thicker cardboard, corrugated plastic up to 5mm, and rigid plastics.
- Advantage: Provides twice the service life of single-edge blades because the machine can often cut in both directions, or you can reverse the blade.
3. Asymmetric Double Edge (DR-A Series)
- Tip Profile: Double edges that are asymmetrically ground.
- Best for: Display carton, rigid foamed PVC, and dense gasket materials.
- Advantage: Minimizes edge-burring and flags on one side of your cut, although it requires line direction control during programming.
4. Special Profiles (V-Cut or Foam)
- Tip Profile: Angled or spear-headed (often 30° to 60°) used in rigid V-notch or oscillating tools.
- Best for: Deep-cut foam, structural honeycomb boards, and specialized V-cuts for 3D packaging displays.
5. Tangential Knife Selection Tips
When working with drag knives on tangential heads, the tip is slightly offset from the vertical axis.
- For thinner materials, choose a blade with a smaller flat cutting angle (e.g., 30° to 45°) to preserve tip integrity.
- For rigid, thicker stock up to 20-30mm, use more robust, long-life blades with cutting angles around 40° to 87° depending on the tool holder.
Manufacturer Equivalency Quick-Reference
|
Primary Function |
Esko Kongsberg Model |
Aristo Equivalent |
MultiCam / K-Code Equivalent |
|
Standard Corrugated |
BT-57265 (K6) |
||
|
High-Speed Display Board |
BT-57267 (K4) |
||
|
Thick Foam / Insulation |
BT-56240 (K92) |
||
|
Technical Gaskets / Plastics |
BT-2392 (K24) |
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