Make your own box cushion with seamed boxing following this tutorial. This technique is the tried and true traditional way a cushion is made by using a top and bottom plate of fabric and cutting separate boxing pieces which are seamed together at each corner. Making a cushion like this means it can be made to almost any shape and size and a piping can be added, if desired. It also makes it possible to line up patterned fabric so it runs along the front to back side with patterns perfectly matched up, if desired.
Fabric Calculator Link: https://www.fabric-calculator.com/boxcushions/index.html?utm_source=DIY&utm_medium=Calculator
Seven Ways to Build a Cushion Playlist: https://youtube.com/playlist?list=PLAbM539i4biViIK0BVcxcfXvWBALNJDAI&si=eqnxsaAKsygTcq9x
Cushion Making Flowchart Guide PDF: https://directus.sailrite.com/assets/60307bdb-d7c7-4d91-8cd0-e43c3eea3af3/cushion_selection_flowchart
Using Calculator & Cutting Plates - 1:20
Cutting Boxing to Size - 3:57
Sewing Zipper Plaque - 7:06
Sewing Boxing Ends Together - 12:50
Making Custom Piping (Optional) - 15:08
Basting & Sewing Boxing to Plate - 19:06
Adding Piping to Plate - 22:48
Sewing Assembly to Final Plate - 26:13
Cutting Foam to Size - 31:06
Inserting Foam in Cover - 32:01
Materials & Tools List - 34:17
THE KEY FACTS WHEN MAKING THE TRADITIONAL BOX CUSHION WITH SEAMED CORNERS:
• Moderate complexity and construction time.
• Can be a square, rectangular or irregularly shaped cushion.
• Fabric is cut separately for each side of foam (top, bottom and sides).
• Piping can be used for the top and/or bottom edges, or neither.
• A zipper is installed in the back boxing.
• All boxing pieces are seamed together at corners.
• Bottom can be decorative fabric or be a less expensive cushion
underlining fabric.
• Flippable if decorative fabric is used on bottom and shape allows.
• Pattern matching is possible with effort, except side boxing.
• Can be made to include a curved or wedge edge (email: info@sailrite.com
for other tutorial videos which include those features).
Materials List:
Outdura® Jinga Nautical 54" Upholstery Fabric (213J) - SKU: 124761 https://sailrite.com/shop/fabric?facet_brand=Outdura
Lenzip® #5 Black Continuous Coil Zipper Chain - SKU: 124596 https://www.sailrite.com/Lenzip-5-Black-Continuous-Coil-Zipper-Chain?utm_source=DIY&utm_medium=Box_Cushion_Seamed_Corners
Seamstick 1/4" Basting Tape for Canvas & Upholstery (36 yds.) - SKU: 122065 https://www.sailrite.com/Seamstick-1-4-Basting-Tape-for-Canvas-Upholstery-36-Yards?utm_source=DIY&utm_medium=Box_Cushion_Seamed_Corners
Tex 70 to 75 Thread from Sailrite https://www.sailrite.com/shop/notions/thread?facet_thread_size=Tex+70+%28V-69%29?utm_source=DIY&utm_medium=Box_Cushion_Seamed_Corners
Lenzip® #5 Black Single Locking Metal Zipper Pull (Coil Chain) - SKU: 124600 https://www.sailrite.com/Lenzip-5-Black-Style-A-Single-Locking-Metal-Zipper-Pull-Coil-Chain?utm_source=DIY&utm_medium=Box_Cushion_Seamed_Corners
Medium 5/32" Welting Cord - SKU: 107035 https://www.sailrite.com/Medium-5-32-Welting-Cord?utm_source=DIY&utm_medium=Box_Cushion_Seamed_Corners
CushionRite® Premium Foam - we used (Medium) - SKU: 124234 https://sailrite.com/shop/foam-pillows/foam?utm_source=DIY&utm_medium=Box_Cushion_Seamed_Corners
Tools List:
Clear Acrylic Ruler 6" x 24" -SKU: 102400 https://www.sailrite.com/Clear-Acrylic-Ruler-6-x-24?utm_source=DIY&utm_medium=Box_Cushion_Seamed_Corners
Chalk Pen White - SKU: 123131 https://www.sailrite.com/Chalk-Pen-White?utm_source=DIY&utm_medium=Box_Cushion_Seamed_Corners
Sailrite® Tempered Cutting Glass - SKU: 121915 https://www.sailrite.com/Tempered-Cutting-Glass-for-Hotknife?utm_source=DIY&utm_medium=Box_Cushion_Seamed_Corners
Sailrite® Edge Cordless Hotknife 18V Package - SKU: 122177 https://www.sailrite.com/Sailrite-Edge-Cordless-Hotknife-18V-Package?utm_source=DIY&utm_medium=Box_Cushion_Seamed_Corners
Gingher® 8" Scissors Right Handed - SKU: 19104 https://www.sailrite.com/Gingher-Scissors-Right-Handed?utm_source=DIY&utm_medium=Box_Cushion_Seamed_Corners
Sailrite® Ultrafeed® LSZ Walking Foot Sewing Machine (110V) - SKU: 311602 https://www.sailrite.com/Sailrite-Ultrafeed-LSZ-Walking-Foot-Sewing-Machine-110V?utm_source=DIY&utm_medium=Box_Cushion_Seamed_Corners
Sailrite® Ultrafeed® Industrial Sewing Table - SKU: 120934 https://www.sailrite.com/Sailrite-Ultrafeed-Industrial-Sewing-Table?utm_source=DIY&utm_medium=Box_Cushion_Seamed_Corners
Magnetic Sewing Guide - SKU: 102983 https://www.sailrite.com/Magnetic-Sewing-Guide?utm_source=DIY&utm_medium=Box_Cushion_Seamed_Corners
Multiuse Pins 1-1/2" (250 pack) - SKU: 102985 https://www.sailrite.com/Multi-Use-Pins-1-1-2-250-Pins?utm_source=DIY&utm_medium=Box_Cushion_Seamed_Corners
Sailrite® Blade Foam Saw V2 with Carrying Case (110V) - SKU: 121244 https://www.sailrite.com/Sailrite-Blade-8-Foam-Cutter-with-Carrying-Case-110V?utm_source=DIY&utm_medium=Box_Cushion_Seamed_Corners
Straightedge Marker