Good point @hippy the frame is currently still with the sprayshop. I didnt want to pay for return shipping until i'd heard back from the frame builder so id only have to pay one set of shipping.
@Sumo will check on the material used in the shotblaster. The sprayshop that did it are part of well established steel bike brand that also specialise in refurbishment so would like to think suitable material was used. Will double check though.
That's good, probably not them the cause then. Can you get them to peep down some tubes to see if there's rust inside? inside the downtube from the hole to the head tube etc.
Good point @hippy the frame is currently still with the sprayshop. I didnt want to pay for return shipping until i'd heard back from the frame builder so id only have to pay one set of shipping.
@Sumo will check on the material used in the shotblaster. The sprayshop that did it are part of well established steel bike brand that also specialise in refurbishment so would like to think suitable material was used. Will double check though.