# Cage build time **URL:** \ **Category:** SON240sx Automotive\ **Created:** [May 8, 2008, 10:45am UTC](https://forums.speedlife.net/t/cage-build-time/115332 "2008-05-08T10:45:26Z")\ **Posts on this page:** 1\ **Showing post:** 12
**Author:** ![S13counterpart](https://avatars.discourse-cdn.com/v4/letter/s/3e96dc/32.png) [@S13counterpart](https://forums.speedlife.net/u/S13counterpart)\ **Post date:** [May 8, 2008, 2:36pm UTC](https://forums.speedlife.net/t/cage-build-time/115332/12 "2008-05-08T14:36:11Z")
> [@FS: 99gsx and 95 m3](https://forums.speedlife.net/t/fs-99gsx-and-95-m3/16899/22): > > You need it approved by whatever sanctioning body you plan on running in, and the specifications may vary. Tig welding is not considered structural (iirc), so I would imagine they would require stick, or mig if anything. But either way, I don’t think they care about the certs of the welder (again, iirc), just that it passes the requirements in build quality. The inspector is the one who should be final judge of the welds anyway, it’s their job. TIG isn’t used for structural. But it can be in some cases. It’s mainly Flux cored, Metal cored, and Arc welding that are used for structural as they have the best penetration. MIG is more for production. On a cage however, the metal is far from structural grade metal. If refering to structural as items such as bridges and buildings. In the case of a roll cage. TIG can be as strong as anything else. Also creates a much more appealing weld. To me, it makes perfect sense that the welder welding the in the cage be qualified. If the welds are at all to be inspected for their quality, it makes perfect sense. I just wanna know if I’ll have to re-test myself every two years for TIG or not… --- _[View the full topic](https://forums.speedlife.net/t/cage-build-time/115332)._