sifoo, which 1 is better between 2 layers aluminium or 2 layers copper radiator?

i see the pic he only welded a flat plate for your anti-roll bar
this is a point that will be subjected to consistent fatigue (i.e. the anti-roll bar will keep trying to bend it up and down as you take corners...so the joint actually gets "tired" in a sense)
a flat plate welded to the frame will definitely eventually break along the weld as that is the most brittle part (weakest link)
when welding for these kind of applications, you need to triangulate the anchor point
so what the guy should do is weld the flat plate to the frame, then add in atleast 1 (two would be better) triangles perpendicular to the plate to support the bending force that the anti-roll bar will induce on that plate

please refer to picture below for illustration:

u ask the shop to do like this sure they will make noise and say no need etc
just stick to your guns
after all, not hard to do wut...and cost wise practically no diff
but most shops lazy 
if can get a shop with MIG welding
much better finish, and less thermal damage to the area
arc welding isnt as good...so so lor...
if they 1 2 use gas welding tell them go fly kites...that will soften the whole area around the weld (check out anealing if 1 2 know more)

actually, now that i think about it, if want to make it easy, take a 1inch or 1.5inch flat bar and 90degree bend it into a U shape....
grind off the two exposed edges and then weld along the whole line and kautim!
that might actually be better than adding on the triangulation pieces 

diff shop diff
the better shops will have MIG
so far saw 1 shop that had TIG (this is the best!)
most will have arc welding
some of the lauya el-cheapo shops will still be using gas
MIG welding is that thing where they hold like a gun that has a trigger
then its attached to a metal box with dials n stuff on it that needs to be pluged into a power point
the welding material is fed by the machine through the handle continuously from a roll in the box

arc welding is the one where they clip the welding rod into the handle then weld and have to keep replacing the welding rod as it finishes

gas welding sure know rite?

ya
sumthing like that lor

gas welding means got two big cylinders
then got a visible flame
nev let them use gas welding on your car
surrounding metal will rust very fast as your undercoat dip layer will be burnt off and the metulargy of your metal will be changed

i tot mikeair promise u not me??...
oh... thanks for the info... i noob in welding as me not from mechanical engineering...
i did mentioned to the workshop what if the welding part breaks... he said wont happen bla bla bla... these few days i try whack my car hard hard if the arb can withstand the stress or not.... if it breaks, gonna go back claim for waranty to reweld it adi....
hmm... same row wif da bodykit shop??...
i tot dat one is ca18det??...
oh... i've seen workshop rebuild da inner wheel arch using gas welding... using a torch to melt the iron weld to join 2 metal parts together...
why so cheap one??... melaka here rm60... dat blardy cut throat workshop....
fuhyoo... fast car...
fuhyoo... special autocross session ah??...

rm35 consider cheap d.. buy the bar n go back to the exhaust shop to weld it.. haha wanna buy UR bar? hehe
 

wat kind of bush do u wanna change? ?
there's so many bush like steering mounting bush,lower arm bush,absorber bush n rear axzel bush~