How to make an endless loop bow string jig for around $40 to $60.
https://www.seansoutdooradventures.com
Parts list – see below for a list of things you will need.
1 = 10 foot unistrut
One diamond circular saw blade to cut unistrut
(Cut 2, 1 foot sections off of unistrut for string jig arms, and cut two 4 inch pieces of unistrut for the angle iron used in string stretching.)
4 – 6 inch long 1/2 inch bolts
4 – 1/4 inch bolts about an inch and a half long with allen wrench head and smooth top section
(Have the 1/2 inch bolts tapped and then screw the 1/4 inch bolts down in the top leaving the smooth part exposed for wrapping string)
8 – 1/2 inch nuts for securing ½ inch bolts to unistrut (one on top and one under unistrut)
4 – 2 1/2 inch long 3/8 inch bolts (2 of these will be used for securing the string jig arms to sliding bolt inside unistrut, and 2 for securing each string stretching jig.)
4 – 3/8 inch nut with spring backing that fits into the unistrut
2 pieces of angle iron—you will use these with garment hook for string stretching.
2 garment hook bolts with nuts (these will go through the angle iron for string stretching)
4 – 1 inch long 3/8 inch bolts and nuts for attaching angle iron to unistrut
2 – 2 inch long 3/8 inch bolts, nuts, and washers for bolting unistrut to table
2 – small bolts about an inch long with 4 nuts and 2 washers – for the side of one jig arm for attaching loose string ends to (Diameter of bolt not important, whatever you have will work.)
If you don’t have them already, 1/2 inch diameter and 3/8 inch diameter drill bits for drilling holes, and also a drill bit that will fit the size of bolt you use for attaching loose string ends.
https://www.jm-industry.com
Assembly Part
Pieza ensamblada
Square Nut assembly part
Tuerca hexagonal pieza ensamblada
Rubber Assembly Part
Pieza ensamblada con goma
Hex Bolt Assembly Part
Pieza de Perno hexagonal ensamblada
Stud Bolt Assembly Part-1
Varilla roscada ensamblada pieza-1
Stud Bolt Assembly Part-2
Varilla roscada ensamblada pieza-2
Holder Assembly Part
Poseedor pieza ensamblada
Material: Carbon Steel, Alloy Steel, Stainless Steel, Brass(Acero al carbono , Aleación de Acero, Acero inoxidable, Bronce)
Finish (Acabado superficial): Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Chrome, H.D.G. ( Color natural, Zinc Chapado (Claro/Azul/Amarillo/Negro), Negro oxidable, Niquel, Cromo, H.D.G.)
Shanghai Jian & Mei Industry and Trade Co., Ltd
Rm.27202, No.295 South Lingyan Road, Pudong,Shanghai,P.R.C, Code:200126
Tel: 0086-21-33328690-8058
Fax: 0086-21-68413263
English Web：www.jm-industry.com Websit: https://www.jmtornillo.com
Contact: Mrs.Xarella Huang
Email: Jminfo@jm-industry.com
Websit: https://www.jm-industry.com