Thermoforming oven

Discussion in 'Fiberglass and Composite Boat Building' started by Scuff, Mar 30, 2020.

  1. Scuff
    Joined: Nov 2016
    Posts: 60
    Likes: 3, Points: 8, Legacy Rep: 10
    Location: Richmond VA

    Scuff Junior Member

    I did a lot of searching on how to thermoform foam core and I didn't really find much so I wanted to share what I came up with to accomplish that. I built an oven that will allow me to form a sheet 24"x78". I used metal framing studs and 24ga sheet metal. PID/ssr from Amazon. total cost was around $500. It works very well the temperature varies by 8-9*F around the set point. The oven was based loosely on this write up for a powder coating oven Powder Coating: The Complete Guide: How to Build a Powder Coating Oven https://www.powdercoatguide.com/2014/09/how-to-build-powder-coating-oven.html?m=1
     

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  2. BlueBell
    Joined: May 2017
    Posts: 1,112
    Likes: 185, Points: 63
    Location: Victoria BC Canada

    BlueBell Ahhhhh...

    Good for you, it looks nice.

    I've used a pizza oven in the past thermoforming thin plexi.

    What is your set point?
     
  3. Scuff
    Joined: Nov 2016
    Posts: 60
    Likes: 3, Points: 8, Legacy Rep: 10
    Location: Richmond VA

    Scuff Junior Member

    I'm using 230*F for Gurit PVC. The foam does shrink as a result but drapes to the form. No worrying about the foam pulling out of the screws now or deforming the mold. Not all the pics showed up I'll post some of the finished product.
     
  4. Scuff
    Joined: Nov 2016
    Posts: 60
    Likes: 3, Points: 8, Legacy Rep: 10
    Location: Richmond VA

    Scuff Junior Member

    Finished Pic of the oven and one of the foam on the mold

    IMG_20200331_093932.jpg

    IMG_20200331_093942.jpg
     
    hoytedow and BlueBell like this.

  5. DogCavalry
    Joined: Sep 2019
    Posts: 433
    Likes: 156, Points: 43
    Location: Vancouver bc

    DogCavalry Senior Member

    This looks great!
     
    hoytedow and BlueBell like this.
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