If the copper bowl rocks correct it with your planishing hammer and files.
Copper bowls out of copper sheet.
When you have a bowl shaped the way you like it you might want to preserve that nice copper colour.
After hammering and a few annealing cycles your copper bowls will be covered in heat scale.
The vessels can be left raw to allow the copper to age and oxidise naturally.
Sand using sequentially higher grits of wet dry sand paper until there are no tool marks.
Each is unique and bares the blows of our hammers proudly.
This scale consists of varying amounts of copper ii oxide and copper i oxide.
It also comes in many alloys that blend other metals with copper.
Little wood lathe converted for metal spinning.
Expect darkening and colour change over time as this is the nature of the material used.
This weight of copper will be malleable and easier to dent than heavier weights.
The copper ii oxide is black and easy to dissolve in acids.
Our shallow copper vessels are hand forged and shaped from flat sheets.
Use 16 ounce copper sheet.
Metal spinning copper bowls.
At basic copper we sell pure copper c110 other.
Cutting circles out of square with shear cutter.
Copper squares cut from sheet copper bought from local sheet metal shop.
Copper sheeting comes in thicknesses ranging from very thin copper foil to thick copper plate.
The more tenacious copper i oxide is pink rose or red.
Using compass and marker circles are marked on copper squares.
Squares marked corner to corner to find the center.
Roll out the copper sheet so it is on top of the plywood.
Copper sheets can also be hammered tooled or embossed for added texture and decorative or functional appeal and come in many thicknesses from very thin copper foil to thick copper plate.
Instead put the bowl directly into the pickling solution and leave it there a good while say a half hour to 4 hours depending on the strength of the solution and how bright you want the finish don t worry it won t dissolve away.
Below is a quick guide to help you determine which thickness best suits the needs of your project.
You have removed all firescale.
You will need 220 320 400 600 and 800 grits of wet dry sand paper.
Do not anneal the bowl once you have the final shape.