This is a free blown dome. It is different from our line of cast domes which are available in sizes up to 6" in diameter. Free blown domes are manufactured from flat sheets of acrylic which are heat formed. These were made from 3mm thick clear acrylic.
Unlike our smaller domes, this dome does not have a small bit of plastic at the top. However, it has a distorted area on top as a result of the manufacturing process. Please see the detail photos for an example of this.
The thickness of the dome itself varies from the flange around the base, where it is thickest at 3mm, to the tip of the dome where it is thinnest at around 1mm. The flange is about 3/8" wide
We do not recommend these free blown domes for applications such as camera domes, where optical distortion is not acceptable. We can also not guarantee the precision of the measurements to the same degree that we can for our cast domes. The heat forming process results in some unevenness of the dome surface. Also note that the profile of a free-blown dome is not a perfect hemisphere. The diameter is measured across the opening at the base of the dome, but the dome itself is slightly wider just above the opening.
Kit Kraft is a craft and hobby shop in the Los Angeles area and an online store that sells a large variety of arts and craft supplies. Whether it is bulk quantities of glitter to cover a fashion show runway, sculpting material for your art piece or crafting a gift to inspire a friend, our supplies are designed to help bring creative ideas to life.