Hyundai 2008 Elantra Neos Body Repair Manual page 76

BODY PANEL REPAIR PROCEDURE
c) The tip of the spot welding machine should be
maintained to a minimum tolerance of 3 mm. Also
let area cool after 5 or 6 welds to minimize
problems caused by excessive heat.
4. Cutting and welding an removed area
To align a roof panel and a center pillar together for
butt welding, temporarily fasten a steel flange to the
roof panel and then apply the new center pillar panel.
Remove the flange when final welding is done.
5. Finishing after welding
a) Grind any areas that were plug welded or butt
welded using a disk grinder. Grind carefully to avoid
removing too much material. This degrades the
strength of the weld.
3mm(0.2 in)
BVQBP6026
BVQBP6027
BVQBP6028
b) Finish areas that have been brazed by applying
body filler then smooth the area with a flexible file
and sander.
6. Applying anti-rust agent and body sealer
After coating the surface with anti-rust agent, apply
body sealer where necessary.
NOTE
Apply body sealer before assembly.
7. Anti-rust treatment
Apply anti-rust agent to inside of doors and sills by
spraying through access holes provided.
BP-11
BVQBP6029
BVQBP6030
BFDBP6031