King sleigh bed frame is 76 inches wide, while a queen size bed is 60 inches wide. Therefore, a queen bedside table is about 16 inches narrower than a king bed. But with creativity and a time at home improvement center, you can make the queen bedside work with a king size bed. And the gable attaches to the bed frame, making the gable extension much easier. Each bedside is different, so adjust the expansion posts and cuts to fit the design of your bedside table.
Remove the bed from the queen bed. Measure the width of the gable and compare the width of your king sleigh bed frame. The difference in width must be compensated by using wooden posts applied to the ends of the bedside or intermittently along the face of the board. Each bedside is different. Determine how to apply posts to compensate for the difference in width. Cut posts to a desired length that complements the height of the existing queen bed. You should be able to use two 6-by-8s or 8-by-8s at each end or five 4-by-4s, evenly distributed over the bedside. Sand the posts to match the finish line of your existing queen bedside.
If you want to extend the bedside with 4-by-4s, cut the headboard into 4 equal widths of pieces. Drill three guide holes in each post and the ends of the king sleigh bed frame, and see these pilot holes aligned between the end and adjacent posts. Through the post and adjoining bedside, screw in and lower the screws, or drill holes appropriate diameter comb attachment system. If you use the combs, install and tighten the combs. Load end caps or caps to the ends of the posts, and paint or bite the gable to create a uniform color and finish for the play. Once the target has dried, attach the bed frame to the bed sheet.