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Sunstone Welders Micro Resistance - Dual Pulse CD Spot Welders

 

Available models are CD200DP, CD400DP, CD600DP. The dual pulse industrial capacitive discharge (CD) spot welder provides a substantially larger amount of weld energy combined with a finer range of power adjustment. As with Sunstone's other spot welders, the CDDP welders produces clean, strong welds. Pulse one heats the weld area to eliminate surface contaminants and seats the welding electrodes. Pulse two then makes a strong, secure weld. Both pulses occur within milli-seconds.

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Sunstone's dual pulse capacitive discharge spot welders are the ideal product for many spot welding applications. They provide ample power for a large spectrum of applications- at an affordable price. The capacitive discharge spot welders offer a dual pulse feature that helps provide strong, clean, and repeatable welds. Available models include: CDDP200, CDDP400, CDDP600.

Capacitive Discharge Spot Welder Features

  • Dual Pulse operation removes surface inconsistencies and contaminants
  • Single or Dual Pulse operation
  • Up to 90 welds/min at 60ws - Up to 156 welds/min at 40ws - Up to 164 welds/min at 20ws
  • Intuitive user interface


Capacitive Discharge Spot Welder Applications

  • Battery pack welding
  • Thermocouple welding
  • Copper aluminum and brass thin sheet and wire
  • Miscellaneous resistive applications
  • Automotive Welding Applications
  • Honeycomb Tacking
  • Cross wire welding
  • Copper, Aluminum, and Brass thin sheet and wire
  • Miscellaneous resistive applications


Available Upgrades for the CDDP Industrial Spot Welders

  • Roll-Spot Welding
  • High-Precision Energy Adjustment
  • Lock-Out Mode
  • PLC Ready

Dual Pulse CD Spot Welders

Innovation and Reliability at Our Core

At Machine Horizon, we believe that powerful machines drive progress. Our mission is to make advanced technology accessible to creators, engineers, and businesses across industries—from precision CNC and milling to farming, printing, and laboratory equipment.

We’re dedicated to providing reliable, high-performance machines that help you produce, build, and innovate with confidence. Every product we offer is carefully selected for its engineering quality, efficiency, and long-term value.

A Customer-First Approach

We’re more than an online store—we’re your partner in finding the best machine for your need. Unlike large, impersonal retailers, our dedicated team delivers personalized guidance at every step. Whether you’re exploring, seeking expert advice, or need ongoing support, our specialists are always just a call or email away.

Passion for Machinery & Resilience


Our brand is built on a deep respect for craftsmanship, performance, and reliability. We understand how important the right equipment is to your success—that’s why we focus on machines that combine innovation with lasting durability. From small workshops to large production facilities, Machine Horizon provides solutions that help you work smarter, faster, and better.

Trusted Experts, Curated Brands


We partner directly with industry-leading manufacturers across multiple sectors to ensure every product meets our standards for quality and performance. Our curated selection means you can shop with confidence, knowing each machine is backed by expert support and full manufacturer warranties.

More Reasons to Choose Machine Horizon

  • Price Match Guarantee – We’ll match any competitor to ensure you always receive the best value.
  • Free Shipping – Enjoy free delivery on most* orders across the lower 48 U.S. states.
  • 100% Secure Ordering – Our platform uses SSL encryption to protect your information.
  • Exclusive Packages & Volume Discounts – Custom pricing available for workshops, labs, schools, and bulk orders.
  • Authorized Dealer – Every order is protected with full manufacturer support and warranties.


With Machine Horizon, you don’t just buy equipment—you invest in performance, precision, and long-term reliability

Frequently Asked Questions

Our free shipping policy covers most of the products with some exceptions for heavy machinery and freight truck items
Most orders ship out within 1–3 business days and arrive within 5-7 business days depending on your location.
We offer easy returns as long as your item meets the conditions outlined in our Return Policy. Items must be unused, in original packaging, and returned within the specified return window.
Absolutely! Our in-house product experts are here to help. Live chat or call us 513-720-5193 for personalized advice before or after your purchase.
Yes. All products include any applicable manufacturer warranties, and we’ll help you handle any warranty claims if needed.
Yes, we only sell 100% authentic, brand-new products, sourced directly from our manufacturers or authorized distributors.

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