How to Build a Front Bumper (Bull Bar) from DXF Files: From CNC Cutting to Welding

An LNT MADTECH file set gives your workshop everything it needs to build a front bumper (bull bar) for your vehicle: DXF files to cut the parts and PDF drawings to bend, assemble and weld them. This guide walks through the process from checking fitment to the finished bumper.

1. Check that the design fits your vehicle

Each design is made for a specific make, model, year and, for pickups, cab type. Compare the vehicle named in the design title with your vehicle before you order. If you are not sure, send us your vehicle details – we reply within 24 hours.

2. Prepare the equipment

• A CNC cutting machine (laser, plasma or waterjet), or a local cutting service.
• A press brake for bending.
• Welding and grinding tools.
• A computer to open the DXF and PDF files.

3. Cut the parts from the DXF files

Send the DXF files to your CNC cutter. The files are organised by part of the design, and the PDF drawings list the part numbers and quantities so you can check that every part has been cut.

4. Bend the parts using the PDF drawings

The PDF drawings show the bending direction, bending angles and bending tool radius for each part. Follow them on the press brake and keep the bent parts grouped by module.

5. Assemble, weld and check

Follow the assembly instructions in the PDF drawings, tack the parts together, then weld. Check the key dimensions given in the drawings against your vehicle before final welding and finishing.

6. Bought-in parts

Winches, lights, bolts and other bought-in parts are not included in the file set and are purchased separately. Where a design uses them, the PDF drawings show where they are mounted.

Need help during production?

Send your question or a photo to our technical team by email or WhatsApp. We reply within 24 hours. If you find an error in a drawing, report it within 14 days of receiving the files and we send corrected files free of charge once the error is confirmed – see our Refund & Returns Policy.

Browse front bumper (bull bar) designs for pickups and for SUVs.