Free flange DXF generator
Type a flange's outside diameter, its bore, the bolt circle diameter and the number and size of its bolt holes, and Nestor draws the flange and gives you its DXF, free, in inches or millimeters. The bolt holes are spaced evenly on the bolt circle, straddling the centerlines unless you choose otherwise; leave the bore empty for a blind flange.
Make your flange
Flange 8 in OD, 4.5 in bore, 6 holes 0.75 in on a 6.5 in bolt circle. Overall 8 x 8 in.
How it works
- Type the sizes in inches or millimeters. The part is drawn to scale as you type.
- If a size can’t work, such as a hole off the edge or two holes overlapping, the generator says what to change.
- Download the DXF, free. With a free account, save it to your parts library or nest it on a sheet in Nestor.
Questions
Where does the first bolt hole go?
By default the holes straddle the centerlines, the usual way for flanges: with 4 holes they sit at 45, 135, 225 and 315 degrees. Turn that off and the first hole sits on the horizontal centerline, at 3 o'clock.
Can it make a blind flange?
Yes: leave the bore empty, and the flange is drawn with its bolt holes and no center hole.
Is it free?
Yes. Drawing a part and downloading its DXF is free and needs no account. With a free Nestor account you can also save the part to your parts library, or send it straight to Nestor's nesting tool to nest it on a sheet.
Inches or millimeters?
Either. Type sizes in inches (fractions such as 3/4 or 6 1/2 work) or in millimeters, and the DXF is written in the unit you pick, with its units set in the file so CAM software opens it at the right size.
What is in the DXF?
Only the cut lines: the outline and the holes, on one layer, as circles, straight lines and true arcs (rounded corners are arcs, not short straight pieces), in an AutoCAD R12 DXF, the version cutting software opens most widely.
Does it check the part?
Yes. The DXF can't be downloaded while a hole runs off the edge, holes overlap, or less than 1/16 in of metal is left between two cuts or a cut and an edge; the generator says what to change.
More shapes
Nest it next: Nestor’s free nesting tool lays DXF parts out on your sheets for laser, plasma, waterjet and router.