BendARC and CrownARC Systems
BendARC and CrownARC tools are the most widely used system for forming the tubing framework to support canvas in pleasure boats. Our professional marine tubing bending systems are sold around the world, assisting marine canvas builders everywhere. We use high-strength steel and sleeve bushings to ensure your tools will last.

For convenience and to facilitate uninterrupted operations, BendARC and CrownARC systems have interchangeable dies for various tube sizes and radiuses. (Older BendARC / CrownARC systems do not support interchangeability. Newer models have square steel pull-down arms with 3 or 4 roller positions. Older 3-position arms cannot use 12" radius. If your model is pre-2010, please call to determine compatibility.)
BendARC Bending Tools
BendARC Bending Tools assist with bending tubing for canvas enclosures, biminis, dodgers, boat covers and other marine uses. Square BendARCs use an inverted V for strong, precise bends. The 12', 1" square BendARC is a lightning fast way to bend awning ribs, including 1" square and slotted "staple-in" tubing. Complete the package with a CrownARC Crowner.
PART NUMBER BENDARC TUBE BENDER COMPLETE 2026 MSRP
For 7/8" Round (22mm) Tubing
B78RD/06  6" (15cm) Radius $695
B78RD/08  8" (20cm) Radius $767
B78RD/10 10" (25cm) Radius $807
B78RD/10HD  HD BendARM for 10" (25cm) Radius $862
B78RD/12 12" (30cm) Radius $920
B78RD/12HD HD BendARM for 12" (30cm) Radius $974
For 1" Round (25mm) Tubing
B1RD/06  6" (15cm) Radius $695
B1RD/08  8" (20cm) Radius $767
B1RD/10  10" (25cm) Radius $807
B1RD/10HD  10" Radius (25cm) w/HD BendARM $862
B1RD/10SHD 10" (25cm) Radius w/Steel Plates and HD BendARM $1,089
B1RD/12 12" (30cm) Radius $920
B1RD/12HD 12" Radius (30cm) w/ HD BendARM $974
B1RD/12SHD 12" (30cm) Radius w/ Steel Plates and HD BendARM $1,201
For 30mm Round Tubing
B30RD/25HD 25cm (10") Radius w/ HD BendARM $862
B30RD/25SHD 25cm Radius w/ Steel Plates and HD BendARM $1,089
B30RD/30HD 30cm (12") Radius w/ HD BendARM $974
B30RD/30SHD 30cm Radius w/Steel Plates and HD BendARM $1,201
For 1.25" Round (32mm) Tubing
B125RD/10SHD 10" (25cm) Radius w/ Steel Plates and HD BendARM $1,089
B125RD/12HD 12" (30cm) Radius w/HD BendARM $974
B125RD/12SHD 12" (30cm) Radius w/ Steel Plates and HD BendARM $1,201
For 1" Square (25mm) Tubing
B1SQ/10S  10" (25cm) Radius w/ Steel Plates $1,053
B1SQ/12S 12" (30cm) Radius w/ Steel Plates $1,165
For 1.25" Square (32mm) Tubing
B125SQ/12SHD 12" (30cm) Radius w/Steel Plates and HD BendARM $1,209
BendARC Forming Blocks
The following parts allow you to change tube and radius sizes. To change over to a different tubing size, you will need a forming block, a roller and a clamp block in the new size. To change to a different bend radius only, you will only need a forming block in the new radius.
7/8" Round (22mm)
FB78RD/06 6" (15cm) Radius $324
FB78RD/08  8" (20cm) Radius $395
FB78RD/10 10" (25cm) Radius $436
FB78RD/12 12" (30cm) Radius $548
1" Round (22mm)
FB1RD/06  6" (15cm) Radius $324
FB1RD/08 8" (20cm) Radius $395
FB1RD/10 10" (25cm) Radius $436
FB1RD/12 12" (30cm) Radius $548
30mm Round
FB30RD/25 25cm (10") Radius, 30mm Round Tubing $436
FB30RD/25S 25cm (10") Radius w/ Steel Plates $663
FB30RD/30 30cm (12") Radius $548
FB30RD/30S 25cm (12") Radius w/ Steel Plates for $775
1.25" Round (32mm)
FB125RD/10S 10" (25cm) Radius w/ Steel Plates $681
FB125RD/12 12" (30cm) Radius $603
FB125RD/12S 12" (30cm) Radius w/ Steel Plates $839
1" Square (25mm)
FB1SQ/10S 10" (25cm) Radius w/ Steel Plates $681
FB1SQ/12S 12" (30cm) Radius w/ Steel Plates $838
1.25" Square (32mm)
FB125SQ/12S 12" (30cm) Radius w/ Steel Plates $838
BENDARC ROLLER
BROLL78RD 7/8" (22mm) Round Tubing $68
BROLL1RD 1" (25mm) Round Tubing $68
BROLL125RD 1-1/4" (32mm) Round Tubing $72
BROLL1SQ 1" (25mm) Square Tubing $72
BROLL125SQ 1-1/4" (32mm) Square Tubing $72
CLAMP BLOCK ASSEMBLY
CB78RD  7/8" (22mm) Round Tubing $55
CB1RD  1" (25mm) Round Tubing $55
CB125RD  1-1/4" (32mm) Round Tubing $61
CB30RD  30mm Round Tubing $61
CB1SQ  1" (25mm) Square Tubing $55
CB125SQ  1-1/4" (32mm) Square Tubing $55
REPLACEMENT PARTS
BSDH BendARC Standard Duty Handle $225
BHDH BendARC Heavy Duty (HD) Handle $279
BSCALE BendARC Calculating Scale, Plastic $14
CrownARC Crowner Tools
CrownARC Crowner tools simplify the creation of the larger arc for overhead curves using a 3-roller rolling method. Use in combination with the BendARC Bender to increase productivity and efficiency, and produce a complete bow using both tools.
CROWNARC TUBE BENDER COMPLETE
C78RD 7/8" (22mm) Round Tubing $617
C1RD  1" (25mm) Round Tubing $617
C125RDXL CrownARC Tube Bender Complete w/ XL Gears for 1-1/4" (32mm) Round Tubing $685
C30RDXL 30mm Round Tubing w/ XL Gears $685
C1SQ 1" (25mm) Square Tubing $623
C125SQXL 1-1/4" (32mm) Square Tubing w/ XL Gears $715
NOTE: CrownARC Crowner for round tubes will roll any round sizes smaller than the stated size.
CENTER ROLLER w/ STEEL SLEEVE BUSHING and NEEDLE BEARINGS
CROLL78RD/C  7/8" (22mm) Round Tubing $72
CROLL1RD/C  1" (25mm) Round Tubing $72
CROLL125RD/C  1-1/4" (32mm) Round Tube $75
CROLL30RD/C  30mm Round Tube $75
CROLL1SQ/C  1" (25mm) Square Tubing $75
CROLL125SQ/C  1-1/4" (32mm) Square Tubing $82
OUTER ROLLER, GEAR NOT MOUNTED
CROLL78RD/ONM 7/8" (22mm) Round Tubing $72
CROLL1RD/ONM 1" (25mm) Round Tubing $72
CROLL125RD/ONM 1-1/4" (32mm) Round Tubing $75
CROLL30RD/ONM 30mm Round Tubing $75
CROLL1SQ/ONM 1" (25mm) Square Tubing $75
CROLL125SQ/ONM 1-1/4" (32mm) Square Tubing $82
OUTER ROLLER, GEAR MOUNTED
CROLL78RD/OGM 7/8" (22mm) Round Tubing $106
CROLL1RD/OGM  1" (25mm) Round Tubing $106
CROLL125RD/OGMXL 1-1/4" (32mm) Round Tube w/ XL Gear $146
CROLL30RD/OGMXL 30mm Round Tube w/ XL Gear $146
CROLL1SQ/OGM 1" (25mm) Square Tubing $109
CROLL125SQ/OGMXL 1-1/4" (32mm) Square Tubing w/ XL Gear $153
REPLACEMENT PARTS
SLBK Slide Block Assembly, 3-piece $48
CARM CrownARC Crank Arm $34
CGRIP CrownARC Hand Grip $24
CBP CrownARC Back Plate w/ Welded Square Nut $218
BAB BEND-A-BOW CALCULATOR *NOT FOR RESALE* $121
License to use calculator can only be purchased from Columbus Machine Works by end users, and is prohibited from being sold or distributed by other resellers.