Removing TIG welds in inside corners or 2D corners
A TIG weld in a stainless steel inside corner is hard to reach. Which product you choose depends on the thickness of the weld: a fine weld calls for a finer abrasive, a thick weld for a coarser one.
Which product suits your workpiece
With a fine weld (3-6 mm), you risk burn-through or deformation: work with finer abrasives and light, even pressure. With a thick weld, you remove a lot of material: work with coarse abrasives in short intervals to prevent heat deformation.
SA7
Ideal for a fine weld with a glossy finish.
- Unitized wheel
- Works with light, even pressure
MA7
Ideal for a fine weld if you want to work a bit faster.
- More aggressive than the SA7
- Matt finish
FCC
Ideal for removing a thick weld in an inside corner.
- Removes a lot of material
- Work in short intervals to avoid heat
FOV
Ideal for a thick weld in a tighter corner.
- Removes a lot of material
- Work in short intervals to avoid heat
In the video: MA7 wheel
How to remove a TIG weld in a stainless steel inside corner in 3 steps
Check the thickness of the weld
For a fine weld (3-6 mm), choose the SA7 or MA7. For a thick weld, choose the FCC or FOV, depending on the radius of the corner.
Work with the right pressure
With a fine weld, work with light, even pressure. With a thick weld, grind in short intervals so the workpiece doesn’t deform from the heat.
Check the result
Check that the weld is flush everywhere and the corner is nicely rounded. Then finish further if needed.
Frequently asked questions about removing TIG welds in a stainless steel inside corner
Why is a TIG weld in a stainless steel inside corner difficult to remove?
In an inside corner or 2D corner, there is little space and you quickly touch the side walls. The heat also concentrates in the corner, so the stainless steel discolours or deforms more quickly. You therefore need an abrasive that works precisely and stays cool.
Which abrasives do you use for a fine weld in a stainless steel inside corner?
With a thin weld (3 to 6 mm), work with finer abrasive and light pressure. The SA7 unitized wheel removes the weld and gives a glossy finish. The MA7 wheel is more aggressive and gives a matt finish. The SA7 belongs to the Rebel One S-line, the MA7 to the M-line.
How do you remove a thick weld in a stainless steel inside corner?
With a thick weld, there is a lot of material to remove. First use a coarse flap disc, such as the FCC or FOV, and work in short intervals with controlled pressure to prevent overheating. Then finish the corner with a unitized wheel such as the SA7.
