whats the best way of welding up a lost wax casting with porosity holes/cavity, dig it out or is there an quicker way,i dont want to just laying a bit of weld over the hole cheers in advance
Typically have at it with a die grinder or the like to get a suitable prep for welding but depends on the extent of the problem i.e. if it's minor cosmetic defects on a non critical surface may only need a tickle whereas a machined surface needs enough to be removed to be sure that the weld will be porosity free come machining time
