with female dovetails however the edges can be provided with either male or female dovetails the corresponding slides are provided with female or male dovetails the dovetails 49 along the top and side edges 29 33 extend the length of the respective edges on the bottom edge 31 the dovetail is interrupted by the opening 39 into the cavity 37 a side slide 23 is shown in fig8 10 the slide 23 is equipped with a corresponding rail 49 or dovetail so as to fit onto one of the side edges 33 of the base block 21 in the preferred embodiment only one side slide 23 need slide on the base block the other side slide 23 u2032 which is substantially similar to the one side 23 can be permanently coupled the base block 21 such as by an adhesive the side slide 23 and the extinguishing slide 15 can be provided with a depression 51 for a finger hold to allow for better grip on the respective slide the extinguisher plate 25 see fig1 and 3 is a plate that is located along a portion of the length of the top edge 29 the plate is made of metal or some other non flammable material at the temperature of a burning wick the plate can be coupled to the base block 21 by tabs 53 or teeth which are formed in the edges of the plate and then bent down to engage the base.