air bubbles

84-1093879891 · Mon Mar 15, 2004 10:15 am

Who's left that on? I'm sick of having to go around switching things off all the time! ;)

les · Post: # 3409Post **les** Wed Mar 17, 2004 8:01 pm

any idea

les · Post: # 3410Post **les** Wed Mar 17, 2004 8:13 pm

hi tony
moved house lately huge garden so bought some second hand steel moulds,and vibrating table,but full air bubbles,using release oil and vibrating for twenty seconds any tips

danensis · Post: # 3411Post **danensis** Thu Mar 18, 2004 10:07 am

check water for washing up liquid

84-1093879891 · Thu Mar 18, 2004 12:17 pm

Adjust the slump of the concrete, the frequency of the vibration and talk to someone like Armcon or Numold about the use of moulding additives.

the manager · Post: # 7032Post **the manager** Sat Feb 12, 2005 11:48 pm

could be a few things not enough water in mix like my mix to look like porrige
what releasing oil you using and how much you are putting on moulds
where are the air holes mainly in the corners or on the main face of the slab
try diffrent things does your molds dance on your table or just sit
if they dance you wont get a good vibe so alter your motor or put rubber or wood under you moulds