Marble Annealing Oven

Here is the newly finished marble just before closing it up in the annealing oven.

Marble annealing oven.

Heat treating kilns for hardening your blade with maximum efficiency. The word travels fast in the marble collecting community. For boro annealing use the longer bar. Marble collecting may be coast to coast but marble collectors stay in touch frequently.

Do not use marble tiles commonly used for floors or countertops for baking. For soft glass annealing use the shorter bar. Let us pick giraffe bone scales hand pick see all giraffe bone scales hand pick approximate minimum size 1 2 x 3. Paragon ovens paragon ovens.

A green marble has been injected with glass containing iron oxide. Wait 20 minutes roughly you may find you need longer or less time depending on your oven. Once you have made your beads you are ready to begin the annealing process. A 3 4 inch to 1 inch thickness is best.

Skutt scarab micro glass master 33 12 w x 7 5 h x 9 25 d. And manganese will yield a purple one. Put marbles into oven. My annealer is a small kiln with a computerized control that i made using a commodore 64 computer with my own programming and some home brew circuitry.

Annealing kilns for lampwork glass flameworking. The speed and force of the injection determines the final design of the marble. Sort filter. Make sure the marble baking stone is not too large for your oven.

Simply take your standard every day kids playing marble. Preheat your oven to around 200 degrees celsius. Trip s again in and out of the glory hole before being cut off w marble shear s or a knife then placed into an annealing oven for several hour s at i believe about 780 deg. I stumbled across the box of them i had as a kid and subsequently organised them by colour.

Fahrenheit so they don. A means of tempering a hand made glass marble to reduce its brittle nature and give it added strength once completed the marble is placed in an annealing oven where its temperature is reduced slowly over a 24 hour period to room temperature the removal of differential thermal stress machine made glass marbles are not annealed. Cobalt results in a blue marble. There are two aluminum heat control bars one that comes with this new annealer for use with soft glass and the other sold separately below that is used for annealing boro glass.

It is best to purchase marble that has already been prepared for baking purposes such as those found at a chef s supply store. When metal is hardened and you need to make it soft again so that you can do something like machine it you need to anneal it annealing is a heat treat proc.