Air Circulating Hot Box - Part 2

4,930 views · Published 10 September 2016 · 8:49 · Indexed 1 November 2026

Channel: Ronald Walters · 2016 · Howto & Style

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I needed a hot box to preheat chemicals and post cure silicone molds and resin castings. This is an indirect heating method using PTC ceramic heating elements and a blower mounted outside the box, leaving the box interior wide open and unobstructed.

PTC Ceramic Heating Element 250W 110V 320 Degree F
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Dayton 1TDN7 50 CFM Blower
eBay – Electric Motor Warehouse

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