Coil Construction

File name 18vessel

Making slip

Viscosity Water

Getting Started

Coil or slab base If coil seal both sides Slip and score

Coil and Slab construction

You may use up to 50 percent slab construction

Coil construction

You may attempt sculptural form that are decorative

Applying Slip

Why do you need slip? Viscosity of slip How do you apply

slip?

Scoring

Make sure the surface is roughed.

Scoring

Why do you score? Scoring should be

done after applying slip

Scale drawing

1/4 inch equals 1 inch 90 percent accuracy

Not paying attention

Falling apart Fall on floor

Not sealing

Could separate lose form seal every 2-3 coils

Sealing the coils

Add strength to ware It still may separate

even if you done everything correctly

Not scoring properly or enough

What will happen? Separate

Making more than one

Base can be less than 4-5 inches

Must equal 25 inches

Coil construction

Using different coil construction

Coil Construction

Elephant vessel

Coil Construction

Using tools

Finished surface

Using underglaze Applying to leather

greenware or bisqueware

Not to bone dry greenware

Underglaze decoration

Use to create detail patterns or visual images

Can be applied to greenware or bisqueware

Underglaze with clear glaze

Whether applied to greenware or bisqueware fire underglaze first before applying clear glaze

Glazing bisqueware

Only apply to bisqueware NOT greenware

Glob the glaze do not paint on glaze

Dry foot

Dry footing

Dry foot all ware that is large, heavily glazed or glazes that have a tendency to run

Glazing

Choosing glaze

Glaze

Using more than one glaze

Glaze

3 glazes applied over each other

Glazeware

Glaze application Sealing ware thin application Runs Crawling Crazing

Glaze run

Leaves sharp edge when cooled

Glaze run

Kiln wash prevents it from sticking to the kiln shelf

Glaze run

The run will need to be grind or filed to remove sharp edges

You may not get all or the kiln wash off the bottom

Glaze run

Over application Over 5 coats most

glazes will run. Do not over apply the

glaze, unless you are trying to get a certain textural look

Kiln wash

Glaze left on the shelf must be chiseled off.

Kiln wash must be reapplied

Crawling

Some glazes have a tendency to crawl.

Crawling is when the glaze does not attach to the ware

Evaluation

Sketch 100 pts. Construction 200 pts. Following Obj. 100 pts. Work Ethic 100 pts. Surface Finish 200 pts. Total 700 pts.