MFT/3 hole pattern specifications

The numbers the MFT/3 TableTop Creator is built on, in plain text — for anyone making a replacement or custom-size top, or checking a drawing. An unofficial reference compiled by a hobbyist, not published or endorsed by Festool. Back to the tool.

The dog-hole grid

Hole spacing, centre to centre	96 mm
Hole diameter	20 mm
Edge to first hole centre	71 mm on all four edges, for every valid size
Original MFT/3 top	1102 × 718 mm, 11 × 7 holes = 77 holes
Valid length per side	142–1966 mm, 1–20 holes
Placement	The pattern is centred on the top: margin = (length − (holes − 1) × 96) / 2, which is 71 mm for every valid length

Corner screw holes

Four holes fix the top to the table frame, one near each corner.

Position from the corner	43.36 mm along the width (x) and 50.5 mm along the depth (y). On the original 1102 × 718 mm top that is 43.36 mm from the short ends and 50.5 mm from the long sides
Through hole	Ø11 mm
Counterbore	Ø15 mm, flat-bottomed, 6 mm deep by default — for the bolt head

Valid top sizes

Every valid length is two 71 mm margins plus a whole number of 96 mm pitches: length = 142 + 96 × (holes − 1), or simply 46 + 96 × holes. Width and depth are chosen independently, each from this table. The aluminium profile is the matching edge profile length from the size matrix behind the tool.

Holes	Top length (mm)	Aluminium profile (mm)	Note
1	142	100
2	238	196
3	334	292
4	430	388
5	526	484
6	622	580
7	718	676	Original top, depth
8	814	772
9	910	868
10	1006	964
11	1102	1060	Original top, width
12	1198	1156
13	1294	1252
14	1390	1348
15	1486	1444
16	1582	1540
17	1678	1636
18	1774	1732
19	1870	1828
20	1966	1924

How the tool snaps

Type any size and the tool moves it to the nearest valid length. A value exactly halfway between two sizes goes to the smaller one. Anything below 142 mm becomes 142 mm, anything above 1966 mm becomes 1966 mm. The same rule runs on the server for link previews, so a shared link always shows the production size.

The tool reads its size from the address: https://fredenslund.dk/mft/?b=<width>&d=<depth>, both in mm. Example: /mft/?b=1102&d=718 opens the original top.

Shaper export

The downloaded SVG is true to scale (width and height in mm, 1:1 viewBox) and contains no text. Cut types follow Shaper's colour convention, with depths encoded as shaper:cutDepth:

Board outline: exterior cut, depth = board thickness + 1 mm overcut (19 + 1 = 20 mm by default)
Ø20 mm dog holes and the Ø11 mm screw holes: interior cuts at the same depth
Ø15 mm counterbores: pockets, 6 mm deep by default; omitted at 0

The circles are exact and the tool never changes a hole diameter, so the Helix strategy can be chosen on Origin for the round holes. The file name carries the size, hole count and thickness, e.g. MFT3-TableTop 1102mm x 718mm 11x7 holes 19mm.svg.

For scripts and AI assistants

The pattern is also available as plain files, computed with the same rules as the tool. Both take the tool's own parameters: b = width and d = depth (both snap), t = board thickness (default 19) and c = counterbore depth (default 6; 0 omits the counterbores).

/mft/pattern.svg — the same SVG as the Download button: true to scale, with Shaper cut types and depths. Add &download=1 to receive it as a file.
/mft/pattern.json — the snapped size, the hole count, every hole and screw-hole position, the export depths, the file name and links.
/mft/openapi.json — the OpenAPI description of both.
/mcp — the same pattern as an MCP tool (mft3_hole_pattern) for Claude, ChatGPT and other assistants: add the address as a connector, no account needed.

Requests from other sites are allowed (CORS), and answers are cached for a day.

Questions

What is the hole spacing on a Festool MFT/3?

96 mm centre to centre, with Ø20 mm holes. The first hole is centred 71 mm from every edge of the top.

What size is the original MFT/3 top?

1102 × 718 mm with 11 × 7 = 77 holes.

Can I make an MFT/3 top in a custom size?

Yes. Keep the 96 mm pitch and the 71 mm margin, so each side is 46 + 96 × n mm with n from 1 to 20, that is 142–1966 mm. The MFT/3 TableTop Creator generates the SVG for any such size.

Why does the tool change the size I typed?

Only lengths of 46 + 96 × n mm keep both the 96 mm grid and the 71 mm margin. The tool snaps your value to the nearest valid size and tells you by how much it moved.

Is this an official Festool resource?

No. The specifications and the tool are an independent hobby project by Anders Fredenslund, not affiliated with or endorsed by Festool or Shaper.