This is the simplest & fastest method for sewing a cushion cover. In fact typical sized cushions can be completed in about 30 minutes each. The Box Corner Cushion utilizes one panel of fabric to make an entire cushion (unless it is a rather large cushion). No boxing, no zipper plaque, no top or bottom plates just one panel of fabric. This 30 minute cushion will include a zippered opening on the back side to accommodate the insertion of the cushion's foam. It is also a flippable cushion, meaning both sides can be used as the decorative side.
Use the Sailrite Fabric Calculator to get instant cut measurements for your size cushion so you can quickly produce a cushion without doing complicated math. Sailrite's Fabric Calculator is designed to produce a cushion cover that is tight fitting over the foam (slightly smaller than the foam) for a simply gorgeous cushion.

30 Minute Cushion Calculator:
https://www.fabriccalculator.com/Fli...

MAKE A BOX CORNER CUSHION THE 30 MINUTE CUSHION CHAPTERS:
Intro 0:00
Which Foam Should I Buy? – 0:40
Using the Fabric Calculator – 2:01
Cutting Foam to Size – 2:57
Large Cushion Discussion – 4:50
Cutting Fabric to Size – 5:18
Cutting Corner Notches – 8:34
Cutting Center Notches – 10:01
Sewing Zipper – 11:45
Sewing Sides – 16:18
Sewing Boxed Corners – 18:56
Inserting Foam – 24:09
Materials List – 27:49

MATERIALS LIST:
• Fabric from Sailrite we used Sunbrella® Sailrite® Divide Havana Item # 1455040001 https://www.sailrite.com/Fabrics/Home...
• Foam from Sailrite we used High Density Polyurethane Foam (Medium) 4" x 24" x 80" Item # 284M2480 https://www.sailrite.com/FoamandPil...
• Seamstick 1/4" Basting Tape for Canvas & Upholstery (36Yds) Item # 122065 https://www.sailrite.com/Seamstick1...
• Thread from Sailrite we used V‑69 Natural Polyester UV 4oz (1,350Yds) Item # 106135 https://www.sailrite.com/Notions/Threads
• Continuous Zipper Chain #5 Coil White Item # 104387 or Black Item # 104444 https://www.sailrite.com/YKKZipper5...
https://www.sailrite.com/YKKZipper5...
• Zipper Slider (nonlocking) #5 Coil White Item # 122250 or Black Item # 122251
https://www.sailrite.com/YKKZipperS...
https://www.sailrite.com/YKKZipperS...
• Cushion Wrap Silk Film 54" Item # 103933 https://www.sailrite.com/CushionWrap...

TOOLS LIST:
• Clear Acrylic Ruler 6" x 24" Item # 102400 https://www.sailrite.com/ClearAcryli...
• Sailrite® Blade Foam Saw V2 with Carrying Case Item # 121244 https://www.sailrite.com/SailriteBla...
• Tempered Cutting Glass for Hotknife Item # 121915 https://www.sailrite.com/TemperedCut...
• Sailrite® Edge Hotknife Package Item # 103800 https://www.sailrite.com/SailriteEdg...
• Sailrite® Canvas Patterning Ruler Item # 107040 https://www.sailrite.com/SailriteCan...
• Scribe‑All® Black Marking Pencil for Vinyl Item # 121977 https://www.sailrite.com/ScribeAllW...
• Sailrite® Ultrafeed® LSZ‑1 PLUS Walking Foot Sewing Machine Item # 300602 https://www.sailrite.com/SailriteUlt...
• Sailrite® Ultrafeed® Collapsible Sewing Table Item # 104821 https://www.sailrite.com/UltrafeedCo...
• Deluxe 5 1/2" Magnetic Sewing Guide Item # 103597 https://www.sailrite.com/Deluxe512...