SPS Kiln Academy

From intimidated to confident.

Your kiln isn't a mystery — it's a machine, and we build them. The Kiln Academy is our free library of tutorials and guides that teach you to set up, run, and even repair your own kiln, safely. Taught by the SPS team who make, fire, and fix these machines every day.

Filmed once. Helps forever.

Denny, Brian, and the SPS team record the real jobs so every maker can learn from them.
Start here

Set up & operate your kiln

New kiln, or just want to fire with confidence? Start with the fundamentals.

Setting up your kiln

Get a new kiln unboxed and installed the right way.

Assembling your kiln

GM Denny Porter shows you how to put your kiln together out of the box.

Learn kiln basics

The fundamentals every kiln owner should know before the first firing.

Kiln operation

Running a firing — the essentials of operating your kiln, start to finish.

Handling the lid & arm

Open, close, and adjust your kiln's lid and arm safely.

Lid assist: take apart & reassemble

Disassemble the lid-assist to move your kiln, then put it back together.

How to use a kiln sitter

Firing a manual kiln with a kiln sitter, step by step — with Denny Porter.

Power & wiring

Getting power to your kiln

Connecting your kiln's electrical box

The (really simple, we promise) wiring at the kiln's electrical box, step by step.

Plug your kiln into power

The best way to plug in your new kiln once the circuit is ready.

Electrical work is for a qualified electrician. Kilns draw a lot of current and need a dedicated circuit. Have a licensed electrician verify your breaker, wiring, voltage, and plug before firing. Buying or installing a kiln? Hand your electrician our Kiln Electrical Installation info sheet, and see the buying guide below for the basics.

Repair it yourself

Common DIY repairs

Two of the most common kiln fixes, done on camera. Most element, relay, and thermocouple swaps are well within reach — with us in your corner.

Most common

Replace your kiln's elements

The full element-replacement process on an SPS kiln, from start to finish.

Change a thermocouple

Swap the thermocouple on an SPS kiln, with Denny walking you through it.

🛟 Safety first. Only work on a kiln that's unplugged and cool. Never touch wiring or elements with the power on. If a fix is beyond your comfort — or involves live voltage — let us help.

Not sure what's wrong, or want a tech on the call?
Book a $49 Kiln Health Check — a live Google Meet diagnosis. We pinpoint the problem and send you the exact parts with a checkout link.

Book a $49 Kiln Health Check → Shop kiln parts
Buying & planning

How to choose a kiln

Buying your first kiln — or upgrading? These are the questions we walk every customer through. As always, you can just ask us: we're all potters here.

What electrical setup do I need?

Electric kilns draw a lot of current and often need a dedicated circuit — have an electrician check your hookups first.

Amps: choose a breaker about 7–10 amps higher than the kiln's rated draw. A kiln rated at 22 amps wants a 30-amp breaker (22 + 7 = 29). Less than ~5 amps of headroom can overheat and trip the breaker at peak draw. Never increase an outlet's capacity without an electrician.

Volts: most home kilns need 240V (like an electric dryer). Some small kilns offer 120V. Many schools and commercial spaces run 208V — confirm your voltage before you buy, because the kiln must match it.

Phase: homes are single phase (what you want). Some commercial/industrial sites are 3-phase — check with your electrician.

Plug: kilns ship with various plugs to match their draw. Check the kiln's receptacle against your wall; you may need to swap the receptacle and the circuit behind it. Hand your electrician our Kiln Electrical Installation info sheet.

Gas kiln or electric kiln?

If you're a beginner or intermediate potter — or you've never owned a kiln — get an electric kiln. They're easier to use, simpler to install, need less safety buffer, and don't require constant babysitting.

Gas kilns shine for routine cone 10 work (translucent porcelain and stoneware) and are required for reduction firing, since electric kilns can't remove oxygen. But they need experience, constant attention, and often a special gas line. Many gas potters keep a second electric kiln too.

What size kiln should I get?

Depth & ergonomics: pick a kiln whose floor is within easy reach for your height — you'll load and unload 25–50+ lbs every firing. We generally recommend two-ring kilns (≈18" interior depth) for people under 6 feet, and three-ring kilns (≈27") only for taller potters or those who truly need the space.

Studio room: measure with the lid open. Leave at least a 12" buffer on all sides (it gets hot), and keep it within reach of the outlet — our kilns have a 6-foot cord.

Your work & pace: bigger pieces need a bigger kiln. If you plan to grow, size up — but make sure you can still fill it in a reasonable time. Beginners take a while to fill a large kiln.

Front-loading or top-loading?

Nearly all potters prefer top-loading kilns — you can stack them efficiently and fill them full. Front-loading pottery kilns are rare.

How much does a good kiln cost?

Price tracks size. For a small personal kiln, expect roughly $1,200–$2,200. For quality, look for well-insulated walls (such as 3" firebrick) so it heats faster and holds temperature, and a digital controller for ease of use.

Do I want a digital controller?

For most people, yes — there's almost no downside. A digital controller makes firing far easier and lets you step away; some even offer phone monitoring and control. You can still fire the old-school way if you like.

One note: a controller reads temperature from a thermocouple, so a loosely packed kiln can give readings that don't reflect true heat-work. Cones confirm you actually reached temperature — pack your kiln well and you'll avoid surprises.

Will I need accessories?

Yes — at minimum kiln shelves, posts, and kiln wash (which keeps work from sticking inside the kiln). Browse kiln shelves, shelf kits, and kiln wash.

Quick clips — know your kiln

Basic kiln parts

How to operate your kiln

Plugging in your kiln

Features of an SPS kiln

Ready to shop? Browse electric kilns — built and tested by SPS.

Manuals & quick guides

Your kiln's paperwork, all in one place

The official SPS manuals and quick-start guides — the same documents that come with every new kiln. Bookmark this; you'll come back to it.

SPS Kiln Tech Certification

Are you a kiln tech — or want to be?

We're building a national network of skilled repair techs, and we train them. Earn your credential, get listed in our referral directory, and buy parts at trade. Help us make sure every maker in America has someone to call — wherever they live.

Certified Kiln Owner

For hobbyists and studios. Online, self-paced — go from helpless to capable, and never fear your kiln again.

SPS Certified Kiln Technician

For aspiring & working pros. Coursework + hands-on + exam. Join the SPS referral network and buy parts at trade.

Join the waitlist →

Coming soon — join the waitlist and we'll tell you the moment enrollment opens.

Still stuck?

We've got you — wherever you are

Watch the video and it clicks? Great — grab the part and go. Want a real tech with you? Book a live diagnosis. Either way, we're the people who build these kilns.

Book a $49 Kiln Health Check → Shop kiln parts & element packs

Questions? Call 888-915-1196 or email info@seattlepotterysupply.com