Cutting guidelines for sheet-metal

Plate thickness
Steel	0,8 - 25 mm
RVS	0.5 - 20 mm
Aluminium	1 - 10 mm
Minimum product dimensions
Plate thickness up to 5 mm	15 x 15 mm
Plate thickness 6 to 15	18 x 18 mm
Plate thickness 20 mm	20 x 20 mm
Plate thickness 25 mm	25 x 25 mm
Maximum product dimensions
Plate thickness up to 10 mm	2.980 x 1.480 mm
Plate thickness12 mm	2.976 x 1.476 mm
Plate thickness15 mm	2.970 x 1.470 mm
Plate thickness20 mm	2.960 x 1.460 mm
Plate thickness 25 mm	2.950 x 1.450 mm
Minimum dimensions narrow strip (to prevent warping)
Length 100 to 750 mm	15 mm
Length 750 to 1500 mm	40 mm
Length from 1500 mm	60 mm

Minimum slot size with Steel and Stainless steel (also applicable to lead-in lenght)
Plate thickness up to 2 mm	1,5 mm
Plate thickness 2,5 to 15 mm	0,7 x plate thickness
Plate thickness 20 and 25 mm	At least the plate thickness
Minimum slot size with Aluminium (also applicable to lead-in lenght)
Plate thickness up to 2 mm	2 mm
Plate thickness 2,5 mm	2.5 mm
Plate thickness 3 mm	3 mm
Plate thickness 4 mm	3 mm
Plate thickness 5 mm	3.5 mm
Plate thickness 6 mm	4 mm
Plate thickness 8 mm	5 mm
Plate thickness 10 mm	7 mm

Minimum hole / dam size with Steel ø nitrogen		ø oxygen
Plate thickness 0,8 to 1 mm	0,5 mm
Plate thickness 1,25 to 1,5 mm	0,8 mm
Plate thickness 2 mm	1 mm
Plate thickness 2,5 mm	1,25 mm
Plate thickness 3 mm	1,5 mm	1,5 mm
Plate thickness 4 mm	2 mm	2 mm
Plate thickness 5 mm	3,5 mm	2,5 mm
Plate thickness 6 mm	4 mm	2,4 mm
Plate thickness 8 mm	5,5 mm	5 mm
Plate thickness 10 to 15 mm		6 mm
Plate thickness 20 mm		11 mm
Plate thickness 25 mm		15 mm

Minimum hole / dam size with RVS ø
Plate thickness 0,5 to 1 mm	0,5 mm
Plate thickness1,25 to 1,5 mm	0,8 mm
Plate thickness 2 mm	1 mm
Plate thickness 2,5 mm	1,25 mm
Plate thickness 3 mm	1,5 mm
Plate thickness 4 mm	2 mm
Plate thickness 5 mm	2,5 mm
Plate thickness 6 mm	3 mm
Plate thickness 8 to 12 mm	3,1 mm
Plate thickness 15 mm	4 mm
Plate thickness 20 mm	5 mm
Minimum hole / dam size with Aluminium ø
Plate thickness 1 mm	0,5 mm
Plate thickness 1,2 to 1,5 mm	0,8 mm
Plate thickness 2 mm	1,5 mm
Plate thickness 2,5 mm	2 mm
Plate thickness 3 t/m 4 mm	2.5 mm
Plate thickness 5 mm	3,5 mm
Plate thickness 6 mm	4 mm
Plate thickness 8 mm	5 mm
Plate thickness 10 mm	7 mm

Mark as marking point

Holes with a diameter that are too small to cut, are marked. In practice, this means either a small hole or a marking point to indicate the position of the hole.

Starting points and lead-in length

Starting points can be specified in Sophia®. 247TailorSteel determines the position if the starting points have not been specified.

The starting point must be drawn at least 3 mm outside of the entity or at the top (see image). A distance of at least 5 mm applies to sheets that are thicker than 10 mm.

When placing the starting point, note that there must be space perpendicular to the starting point for insertion. A starting point must therefore not be placed in the middle of a narrow slot.

Corners

When cutting holes into corners, specific hole diameters are maintained. The table below shows the desired hole diameter according to sheet thickness.

For example, a sheet thickness of 0.5 mm to 3 mm should have a hole diameter of 1 mm. At the opposite end of the spectrum, a sheet thickness of 15 mm to 25 mm should have a hole diameter of 4 mm. See the table for a complete overview.

Plate thickness	Hole diameter
0.5 t/m 3.0 mm	1.0 mm
4.0 t/m 6.0 mm	1.5 mm
8.0 t/m 12.0 mm	2.0 mm
15.0 t/m 25.0 mm	4.0 mm

Edging sharp corners

≤ 3 mm: 0,3 mm

> 3 mm: 0,1 x sheet thickness

Holes in material thickness

Holes may only be located on the top (blue side) of the product. Holes drawn in the thickness of the material (see illustration) cannot be recognised by Sophia and may cause incorrect hole calculations.

Engraving

247TailorSteel only engraves functionally, for positioning or identification. Only the upper side of the sheet can be engraved. Foil-coated materials cannot be engraved.

Engravings must not touch or cross the outer contours.
In the case of a STEP file, the engraving must be drawn at least 0.2 mm deep.
Engraving lines are displayed as yellow lines.

Please refer to STEP and/or DXF/DWG file specifications for character specifications.

Edge Rounding

Sophia gives the option of edge rounding. This process reduces the sharpness of the edge, which limits the likelihood of cuts. Rounding can leave abrasions on the surface (light scratches).

This process is carried out once with the following standard:

Aluminium/Stainless steel

Up to and including 3 mm edge rounding of the front and bottom side
Thicker than 4 mm only the bottom side (with the burr of the cutting process).

Steel/Galvanized

All thicknesses on the front and bottom side.

Tolerances

Dimensional tolerances of cut contours. Cutting is in accordance with the ISO9013 norm, unless stated otherwise in the table below.

Work piece thickness (mm)	Allowable tolerances for the range of nominal measurements (mm)
	0 to 3	3 to 10	10 to 35	35 to 125	125 to 315	315 to 1000	1000 to 2000	> 2000
> 0,5 ≤ 1	± 0,2	± 0,2	± 0,2	± 0,2	± 0,2	± 0,3	± 0,4	± 0,65
> 1 ≤ 3	± 0,2	± 0,2	± 0,2	± 0,25	± 0,25	± 0,35	± 0,4	± 0,65
> 3 ≤ 6	± 0,2	± 0,2	± 0,25	± 0,25	± 0,3	± 0,4	± 0,45	± 0,7
> 6 ≤ 10	-	± 0,25	± 0,3	± 0,3	± 0,35	± 0,45	± 0,55	± 0,75
> 10 ≤ 15	-	± 0,3	± 0,35	± 0,35	± 0,45	± 0,55	± 0, 65	± 0,85
> 15 ≤ 20	-	± 0,4	± 0,4	± 0,4	± 0,55	± 0,75	± 0,85	± 1,2
> 20 ≤ 25	-	± 0,45	± 0,45	± 0,5	± 0,7	± 0,9	± 1,1	± 1,6

Changelog

Date	Change Type	Description
10/10/2017	Publish	Page published
23/10/2017	Edit	Changed minimal product dimension
06/12/2017	Edit	Changed minimal product dimension
11/12/2017	Edit	Changed page content
23/08/2018	Edit	Added Holes in corners section
16/04/2019	Edit	Several translations and images added to engraving and corners
26/01/2021	Edit	Changed hole and dam size

Cutting guidelines for sheet-metal

Index

General submission rules and guidelines

Specifications for STEP-files

Specifications for DXF/DWG-files