I do a lot of multi part carvings ... No need to Split a pattern as you call it ... Your basic limits are the width 14 1/2 " .. So the way I do it,,, If it's 24 inches I need,, I'll use 12 1/4 boards.. and tell designer I'm using 12 " boards.. Add your pattern to the board, grab a corner and stretch it until the yellow center dots line up on the top edge of the board ( Bottom Half of pattern remain in view ).. Oh ,, The bottom of your pattern box should be close to the bottom edge .. If you use the grid, snap to grid, snap to the 1/4" mark at the bottom ... Do the opposite for the top ... Just make sure you center along the length .. and do not start with a new project.. Save as bottom ... Now with out closing the board drag your pattern down until the center dots line up on the bottom edge of board ... Careful not to resize during moving it ... Now save as Top .. if you have any questions or problems PM me Kevin ...
Mans Quest for knowledge,,, means he'll always find a way !!