{"product_id":"diy-battery-spot-welding-pen-threaded-tip-copper-tube-kit","title":"DIY Battery Spot Welding Pen – Threaded Tip \u0026 Copper Tube","description":"\u003cp\u003eTake your DIY battery spot welding projects to the next level with this \u003cstrong\u003ePoint Touch Spot Welding Pen\u003c\/strong\u003e. Designed for hobbyists and makers who need precise, repeatable welds on battery packs and similar assemblies, this handheld kit combines a threaded-tip welding pen with a robust copper tube connector for a reliable, easy-to-use setup.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreaded Tip Locking System:\u003c\/strong\u003e The spot welding copper tip screws in securely for a firm, rattle-free hold — no slipping during use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e100mm Copper Core Refill Compatible:\u003c\/strong\u003e Each full 100mm copper core can be cut into 2 working sections, extending your kit's life and value.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCopper Tube Connector:\u003c\/strong\u003e Inner diameter of 8mm accommodates a maximum cable gauge of 4 AWG (approximately 7.5mm). Simply smooth out the wire strands, twist them together, and feed them into the copper tube — reserve 10–15mm inside for a secure connection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHand-Crafted Welding Needle:\u003c\/strong\u003e Each welding needle is manually processed. Please note that lengths may vary by approximately ±8mm and core diameter may vary by approximately ±2.3–2.4mm — factor this into your build planning.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable in 2 Color Options:\u003c\/strong\u003e Choose the style that suits your workbench setup.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Handheld:\u003c\/strong\u003e Lightweight and ergonomically shaped for comfortable single-hand operation during detailed work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eCopper tube inner diameter: 8mm\u003c\/li\u003e\n  \u003cli\u003eMaximum cable gauge: 4 AWG (~7.5mm)\u003c\/li\u003e\n  \u003cli\u003eRefill core length: 100mm (can be split into 2 sections)\u003c\/li\u003e\n  \u003cli\u003eTip type: Threaded, tightening-fixed\u003c\/li\u003e\n  \u003cli\u003eNeedle tolerance: ~±8mm length, ~±2.3–2.4mm core diameter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1× DIY Point Touch Spot Welding Pen\u003c\/li\u003e\n  \u003cli\u003e1× Copper Tube Connector\u003c\/li\u003e\n  \u003cli\u003eCopper core refill (as described)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho Is This For?\u003c\/h2\u003e\n\u003cp\u003eThis welding pen is ideal for electronics hobbyists, battery pack builders, and DIY makers who need a compact, affordable spot welding accessory for small-scale projects. Basic wiring skills are recommended for connecting the cable to the copper tube connector.\u003c\/p\u003e\n\n\u003cp\u003eFor guidance on safe practices when working with electrical tools and DIY electronics, visit the U.S. Consumer Product Safety Commission (CPSC) for general product safety information, and \u003ca href=\"https:\/\/www.osha.gov\/electrical\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eOSHA's Electrical Safety resources\u003c\/a\u003e for best practices when working with electrical equipment.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the DIY Point Touch Spot Welding Pen used for?\u003c\/h4\u003e\n\u003cp\u003eA: This spot welding pen is a handheld accessory designed for DIY battery pack assembly and small-scale spot welding tasks. It uses a threaded copper tip that locks firmly in place and connects to a power source via a copper tube rated for up to 4 AWG (~7.5mm) cable.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I connect the cable to the copper tube on the spot welding pen?\u003c\/h4\u003e\n\u003cp\u003eA: To connect a 7.5mm cable to the copper tube, first smooth out the individual wire strands, then twist them together into a tight bundle. Slowly feed the twisted end into the 8mm inner-diameter copper tube, leaving approximately 10–15mm of wire inside the tube for a secure fit.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I replace the welding tip\/core?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The welding copper core is compatible with standard 100mm refill cores. Simply cut a 100mm core into 2 equal sections and insert them as needed. The threaded tip design makes swapping cores quick and easy.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Are there size tolerances I should be aware of before ordering?\u003c\/h4\u003e\n\u003cp\u003eA: Yes — because the welding needles are manually processed, please allow for approximately ±8mm in length and ±2.3–2.4mm in core diameter. Review these tolerances against your project requirements before purchasing.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the DIY Point Touch Spot Welding Pen used for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This spot welding pen is a handheld accessory designed for DIY battery pack assembly and small-scale spot welding tasks. 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