03 inches thick throughout the height of the wall 26 of the jar in order to do this it may be necessary to repeat the dip remove hold and cool steps several times for a given color of wax before moving on to the next vat typically each layer represents 5 to 6 dip and cool steps more or less a means for grasping the jar during the dipping cooling and holding process described above is desirable the grasping means should be such that the adherence of each wax coat is undisturbed and a smooth coat results additionally any grasping means must hold onto the jar snugly to prevent losing the jar into a vat of wax the hollow glass lid 30 of fig3 is a suitable grasping means the concave surface 34 fits down into the jar the entire surface between the bottom 37 of the lid and the lip 32 of the lid is of smaller outer diameter than the inner diameter of the opening of the jar an elastomeric seal ring 33 such as a rubber o ring for example which sits in a groove 35 prevents the lid from slipping out of the jar as a result of the jar and wax weight during the dipping holding and cooling process having a larger outer diameter than the inner diameter of the jar the rubber o ring 33 is radially compressed upon insertion of.