IMG_0099.JPG So After Pre heating to 300 F I went at it using the cup pictured. My biggest problem was lack of space to dip the rod into the puddle at the start, ( down deep in the hole ) the rod would start to melt and turn black as it dropped down in, so I would hit the pedal hard and melt it in ...

Thanks to all of you for some great advice.
I will attempt this evening with the long cup and
A back purge, as being an aircooled head it with lots of air passages
Will be difficult to block off all the fins to trap the
Gas.
I will post a picture if my results ( good or bad )

Cheers.

Hi I am doing some Aluminum work on an Aircooled VW cylinder head, its a brand new casting, so nice and clean. Have a lincoln 175 Square wave transformer machine. with Aircooled torch. straight argon. The location I am trying to build up is about 2 " into a recess ( need to build it up prior to...