{"product_id":"squareform™-turn-every-cut-into-a-rock-solid-flawless-joint-you-ll-pride-yourself-on","title":"SquareForm™ — Drill Dead-Square Mortise Holes That Lock Tenons Tight","description":"\u003ch3 style=\"margin: 0 0 10px 0 !important; text-align: center !important;\"\u003eDrill Dead-Square Mortise Holes — No Chisel Cleanup, No Wonky Walls\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 10px 0 !important; text-align: left !important;\"\u003ePulling tight, professional mortise-and-tenon joints out of pine, MDF, or hardwood doesn't have to mean an hour of chiseling for every hole. \u003cstrong\u003eThe SquareForm™ Precision Drill Set bores clean, square-walled mortises in a single plunge\u003c\/strong\u003e — your tenons drop in flush, the joint locks without rocking, and Saturday's project actually gets done on Saturday.\u003c\/p\u003e\n\u003cdiv style=\"display: flex !important; justify-content: center !important; width: 100% !important;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"display: flex !important; justify-content: center !important; width: 100% !important; margin: 0 0 10px 0 !important;\"\u003e\n  \u003cimg src=\"https:\/\/img.staticdj.com\/65a6e5d93c02d8cb6dfd344187aba284.webp\" alt=\"\" style=\"width: 90% !important; height: auto !important; display: block !important; max-width: 90% !important;\"\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin: 0 0 10px 0 !important; text-align: center !important;\"\u003eStop Spending Saturday Chiseling One Wonky Mortise\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 10px 0 !important; text-align: left !important;\"\u003eA round drill bit leaves a circle. A circle isn't a mortise. So you reach for the chisel, square the corners by hand, and twenty minutes later the wall still isn't true. \u003cstrong\u003eYour tenon rocks, the glue line shows, and the build that was supposed to take an afternoon eats your whole weekend.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv style=\"display: flex !important; justify-content: flex-start !important; width: 100% !important;\"\u003e\n\u003cdiv\u003e\n\u003cp style=\"margin: 0 0 10px 0 !important; text-align: left !important;\"\u003e\u003cstrong\u003e➤ Bores square the first time:\u003c\/strong\u003e The hollow chisel sleeve cuts the four flat walls while the auger inside clears the chip — one plunge gives you a true square hole, no follow-up paring with a hand chisel.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 10px 0 !important; text-align: left !important;\"\u003e\u003cstrong\u003e➤ Built for real wood, not metal:\u003c\/strong\u003e Sized for pine, MDF, particleboard, linden, and most furniture-grade hardwoods — the cutting geometry is tuned for wood fiber, not steel or plastic.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 10px 0 !important; text-align: left !important;\"\u003e\u003cstrong\u003e➤ Sharp out of the box:\u003c\/strong\u003e Each chisel ships ground and ready to cut — no honing on a wet stone before your first hole, no gritty edges curled over from rough manufacturing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex !important; justify-content: center !important; width: 100% !important;\"\u003e\u003c\/div\u003e\n\u003ch3 style=\"margin: 0 0 10px 0 !important; text-align: center !important;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0880\/2936\/4557\/files\/n21.2.png?v=1778184383\" alt=\"\"\u003e\u003c\/h3\u003e\n\u003ch3 style=\"margin: 0 0 10px 0 !important; text-align: center !important;\"\u003eMeet SquareForm™: A Hollow Chisel + Auger That Cut as One\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 10px 0 !important; text-align: left !important;\"\u003eEach bit is two tools nested into one. The outer hollow chisel is a four-walled steel sleeve sharpened to a square edge; the auger inside spins to clear the waste while the chisel pares the corners flush. Your mortising machine forces them down together — round chip out the side, dead-square hole left behind.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 10px 0 !important; text-align: left !important;\"\u003eA milled, true-round shaft seats cleanly in the bushing of your mortising machine or drill press attachment, so the bit doesn't wobble and the corners stay clean from hole one to hole one hundred. \u003cstrong\u003eThis is the same hollow-chisel principle pro shops have used for a century — sized for benchtop machines.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv style=\"display: flex !important; justify-content: center !important; width: 100% !important;\"\u003e\u003c\/div\u003e\n\u003ch3 style=\"margin: 0 0 10px 0 !important; text-align: center !important;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0880\/2936\/4557\/files\/n21.5.png?v=1778184383\" alt=\"\"\u003e\u003c\/h3\u003e\n\u003ch3 style=\"margin: 0 0 10px 0 !important; text-align: center !important;\"\u003eWhat Woodworkers Are Saying After the First Cabinet Run\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 10px 0 !important; text-align: left !important;\"\u003e'Bought these expecting to grind the edges before I could use them — half my Amazon mortise bits arrive that way. These were sharp out of the box. Cut twenty 3\/8\" mortises for a tool cabinet on a Sunday morning, every tenon tapped in flush.' – Keith B.\u003c\/p\u003e\n\u003cdiv style=\"display: flex !important; justify-content: center !important; width: 100% !important;\"\u003e\u003c\/div\u003e\n\u003ch3 style=\"margin: 0 0 10px 0 !important; text-align: center !important;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0880\/2936\/4557\/files\/n21.3.png?v=1778184380\" alt=\"\"\u003e\u003c\/h3\u003e\n\u003ch3 style=\"margin: 0 0 10px 0 !important; text-align: center !important;\"\u003eWhy Your Joinery Will Look Different Starting With This Set\u003c\/h3\u003e\n\u003cdiv style=\"display: flex !important; justify-content: flex-start !important; width: 100% !important;\"\u003e\n\u003cdiv\u003e\n\u003cp style=\"margin: 0 0 10px 0 !important; text-align: left !important;\"\u003e\u003cstrong\u003e✓ Square holes in one plunge:\u003c\/strong\u003e Drop the lever, pull it back up, move on — no clean-up chiseling between every hole.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 10px 0 !important; text-align: left !important;\"\u003e\u003cstrong\u003e✓ Joints that don't rock:\u003c\/strong\u003e Flat, true walls let your tenon sit flush — no shimming, no gap-filler glue, no joint creak after a season.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 10px 0 !important; text-align: left !important;\"\u003e\u003cstrong\u003e✓ Hardened steel that holds an edge:\u003c\/strong\u003e Through a full furniture build, the cutting edges stay sharp enough to make the last mortise look like the first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin: 0 0 10px 0 !important; text-align: center !important;\"\u003eSet It Up Once — Then Just Drill\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 10px 0 !important; text-align: left !important;\"\u003eStep 1: Glove up. The chisel edges are sharp out of the box — handle them like you would a freshly ground plane iron.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 10px 0 !important; text-align: left !important;\"\u003eStep 2: Seat the bit. The shaft slides into your mortise machine's bushing; the chisel sleeve clamps to the spindle housing. Snug everything down before you power on.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 10px 0 !important; text-align: left !important;\"\u003eStep 3: Set the bit-to-chisel gap. A 0.02–0.04\" shim (a credit card works) between the auger tip and the chisel face gives the chip somewhere to go and stops the bit from binding mid-cut.\u003c\/p\u003e\n\u003cdiv style=\"display: flex !important; justify-content: center !important; width: 100% !important;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"display: flex !important; justify-content: center !important; width: 100% !important;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-bottom: 10px;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px; background-color: #f2f2f2; text-align: center !important;\"\u003e\u003cstrong\u003eSquareForm™\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px; background-color: #f2f2f2; text-align: center !important;\"\u003e\u003cstrong\u003eRound Bit + Hand Chisel\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px; background-color: #f2f2f2; text-align: center !important;\"\u003e\u003cstrong\u003eMallet \u0026amp; Bench Chisel\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center !important;\"\u003e\u003cstrong\u003eTrue-square walls in one plunge\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center !important;\"\u003e❌\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center !important;\"\u003e❌\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center !important;\"\u003e\u003cstrong\u003eCuts 20+ mortises in an afternoon\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center !important;\"\u003e❌\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center !important;\"\u003e❌\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center !important;\"\u003e\u003cstrong\u003eHardened edge holds through a full build\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center !important;\"\u003e❌\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center !important;\"\u003e❌\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin: 0 0 10px 0 !important; text-align: center !important;\"\u003eSpecs Built for Bench-Top Mortising Machines\u003c\/h3\u003e\n\u003cdiv style=\"display: flex !important; justify-content: flex-start !important; width: 100% !important;\"\u003e\n\u003cul style=\"margin: 0 !important; padding-left: 20px; list-style-type: disc; text-align: left !important;\"\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Carbon steel construction with ground cutting edges and a milled true-round shaft\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eCutting Sizes Available\u003c\/strong\u003e: 4-piece set (¼\", 5\/16\", 3\/8\", ½\") or 6-piece set (adds 9\/16\" and 5\/8\")\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eWhat's Included\u003c\/strong\u003e: One bit per size — hollow chisel sleeve and auger nested as a single assembly\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eCompatible With\u003c\/strong\u003e: Bench-top mortising machines and drill presses fitted with a mortising attachment — not for handheld drills\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin: 0 0 10px 0 !important; text-align: center !important;\"\u003eYour Questions, Honestly Answered\u003c\/h3\u003e\n\u003cdiv style=\"display: flex !important; justify-content: flex-start !important; width: 100% !important;\"\u003e\n\u003cdiv style=\"text-align: left !important;\"\u003e\n\u003cdiv style=\"margin-bottom: 10px !important;\"\u003e\n\u003ch4 style=\"font-weight: bold; margin: 0 0 10px 0 !important;\"\u003eWill these work in my regular drill or bare drill press?\u003c\/h4\u003e\n\u003cp style=\"line-height: 1.5; margin: 0 0 10px 0 !important;\"\u003eNo — and this is the most important thing to know before ordering. SquareForm™ bits need a mortising machine, or a drill press fitted with a mortising attachment that holds the chisel sleeve square to the work. They will not chuck into a hand drill or a bare drill press.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 10px !important;\"\u003e\n\u003ch4 style=\"font-weight: bold; margin: 0 0 10px 0 !important;\"\u003eAre they sharp out of the box?\u003c\/h4\u003e\n\u003cp style=\"line-height: 1.5; margin: 0 0 10px 0 !important;\"\u003eYes. The chisel walls and the auger arrive ground and ready to cut — no pre-honing, no diamond-stone session before your first joint.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 10px !important;\"\u003e\n\u003ch4 style=\"font-weight: bold; margin: 0 0 10px 0 !important;\"\u003eWhat woods will they cut cleanly?\u003c\/h4\u003e\n\u003cp style=\"line-height: 1.5; margin: 0 0 10px 0 !important;\"\u003ePine, MDF, particleboard, linden, and most furniture-grade hardwoods like oak and maple. Don't use them on metal, glass, plastic, or concrete — those will chip the chisel walls.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 10px !important;\"\u003e\n\u003ch4 style=\"font-weight: bold; margin: 0 0 10px 0 !important;\"\u003eHow do I keep the bit from binding mid-cut?\u003c\/h4\u003e\n\u003cp style=\"line-height: 1.5; margin: 0 0 10px 0 !important;\"\u003eSet a 0.02–0.04\" gap between the auger tip and the inside face of the chisel — about the thickness of a credit card. The gap gives the chip a path out the side and stops the auger from grabbing the chisel wall.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 10px !important;\"\u003e\n\u003ch4 style=\"font-weight: bold; margin: 0 0 10px 0 !important;\"\u003eDo I need a lot of experience to get clean holes?\u003c\/h4\u003e\n\u003cp style=\"line-height: 1.5; margin: 0 0 10px 0 !important;\"\u003eNo. Clamp your stock, set the depth stop, pull the lever — the geometry of the hollow chisel does the squaring. After two or three test holes in scrap, your production mortises will look identical.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex !important; justify-content: center !important; width: 100% !important; margin: 0 0 10px 0 !important;\"\u003e\n  \u003cimg src=\"https:\/\/img.staticdj.com\/40eb29422b5becfbd16cbf642ee9b5e8.webp\" alt=\"\" style=\"width: 90% !important; height: auto !important; display: block !important; max-width: 90% !important;\"\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin: 0 0 10px 0 !important; text-align: center !important;\"\u003eMake Tight Mortises Your New Default\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 10px 0 !important; text-align: left !important;\"\u003eSquareForm™ doesn't make you a better woodworker — it just stops the chisel cleanup from eating the part of the build you actually like. Drop a set on the bench, set up your mortiser once, and turn out true mortise-and-tenon joints the way the trade has cut them for a hundred years.\u003c\/p\u003e","brand":"Arvilaro","offers":[{"title":"4 pieces (6.4 mm + 8 mm + 9.55 mm + 12.7 mm)","offer_id":53858279260493,"sku":"LE719188744PCS","price":29.99,"currency_code":"USD","in_stock":true},{"title":"6 pieces (6.4 mm + 8 mm + 9.5 mm + 12.7 mm + 14 mm + 16 mm)","offer_id":53858279293261,"sku":"LE719188746PCS","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0880\/2936\/4557\/files\/n21.1.png?v=1778184383","url":"https:\/\/arvilaro.com\/products\/squareform%e2%84%a2-turn-every-cut-into-a-rock-solid-flawless-joint-you-ll-pride-yourself-on","provider":"Arvilaro","version":"1.0","type":"link"}