The Skutt KM1027 is the kiln to look at when an 18 inch kiln is too small: 23 x 23 inches across, 27 inches deep and 7 cubic feet, enough for about 38 tea bowls by Skutt's count. On 240V single-phase it fires to cone 10. The cost is power: 48A on a 60A breaker, which many homes can only add after a load calculation by an electrician.
This review is research-based. We compared Skutt's KM-1027 product page, its 2023 ceramic kiln catalog, its current electrical installation sheet for contractors, an older Skutt electrical spec sheet (revised 1999), the KilnMaster operating manual (revised 2009) and US dealer listings, checked October 2026. We did not fire this kiln. Our Skutt kilns review compares the whole Skutt range; this page goes deeper on the 1027 alone.
Verdict
Buy the KM-1027 if you fill a kiln at least weekly, fire tall pieces or platters, or share a kiln with a class, and your panel can spare a 60A circuit. It holds well over twice what a KM-818 holds, uses the same KilnMaster controller, and is backed by Skutt's large dealer and parts network.
Skip it if you fire a few pieces a month, if your home has 208V service and you need cone 10 without paying for 3 inch brick, or if your panel is already near its limit. Pick the version by your power first: single-phase 240V for almost every US home, and three-phase only for buildings that have it.
Skutt KM-1027 specs by version
Skutt sells the KM-1027 in four electrical versions and two brick thicknesses. The table combines Skutt's product page, its 2023 catalog and its contractor installation sheet.
| Version | Amps and watts | Breaker and copper wire | Receptacle (NEMA) | Max cone | Interior | Shipping weight |
|---|---|---|---|---|---|---|
| KM-1027, 240V 1-phase | 48A, 11,520 W | 60A, #6 | 6-50 | Cone 10, 2,350°F (1,288°C) | 23 x 23 in, 27 in deep, 7 cu ft | 290 lb |
| KM-1027, 208V 1-phase | 48A, 9,984 W | 60A, #6 | 6-50 | Cone 6, 2,250°F (1,232°C) | Same | 290 lb |
| KM-1027, 240V 3-phase | 29.3A, 11,520 W | 40A, #8 | 15-50 | Cone 10 | Same | 290 lb |
| KM-1027, 208V 3-phase | 31.7A, 11,000 W | 40A, #8 | 15-50 | Cone 10 | Same | 290 lb |
| KM-1027-3, 240V 1-phase | 48A, 11,520 W | 60A, #6 | 6-50 | Cone 10 | 22 in opening, 27 in deep, 6.4 cu ft | 320 lb |
| KM-1027-3, 208V 1-phase | 48A, 9,984 W | 60A, #6 | 6-50 | Cone 10 (catalog) | Same as above | 320 lb |
- Brick: 2.5 in standard; 3 in on the KM-1027-3 (Skutt catalog: no "-3" means 2.5 in brick)
- Outside width: 29 in for Skutt's 10-sided kilns (2023 catalog); exterior height not published by the maker
- Controller: KilnMaster, 12 programs of up to 32 segments; KMT touchscreen version sold
- Included: stand with feet, extra thermocouple, peep plugs, instructional video, lid lifter
- Dry weight: not published by the maker; Skutt's 290 lb is an approximate shipping weight
- Price band: typically $4,400 to $5,100 at US dealers in October 2026 for the standard 240V model; the 1027-3 costs more; check the live price
What changed between sources: Skutt's current contractor installation sheet lists a 40A breaker for both three-phase versions. Its 1999 spec sheet listed 40A at 240V and 45A at 208V, and our Skutt kilns review printed 50A from an earlier reading of the product page; in October 2026 that page shows no breaker size at all, so we now follow the installation sheet. The 1999 sheet also gives 31.3A for the 208V three-phase model, against 31.7A on the current page and catalog. Our Skutt brand page calls 290 lb a dry weight; Skutt gives it as shipping weight.
These are Skutt's stated figures, and its installation sheet says the wire and breaker sizes follow the National Electrical Code and that you should consult your electrician. Have a licensed electrician check or install the circuit, read the nameplate on the kiln you receive, and confirm that your panel can carry a 60A kiln circuit. Do not wire it yourself.
KM-1027 vs KM-1027-3: what the 3 inch brick changes
Skutt's catalog spells it out: "-3" means 3 inch brick, and without it the kiln has 2.5 inch brick. The thicker wall holds heat better, and it takes space from the inside. The KM-1027-3 opening shrinks from 23 to 22 inches and the volume from 7 to 6.4 cubic feet, while shipping weight rises from 290 to 320 lb.
The useful difference is at 208V. Skutt says the 3 inch brick upgrade raises the 208V single-phase rating to cone 10, while the standard 208V KM-1027 is rated to cone 6. If your building runs on 208V and you want cone 10, the 1027-3 is the version to order. On 240V both reach cone 10, so the choice comes down to heat retention against a little space and a higher price.
Shelves differ too. The Ceramic Shop lists 22 inch half shelves for the standard KM-1027 kit and 20 inch half shelves for the KM-1027-3 kit.
208V and three-phase versions: match the kiln to the building
Most US houses have 240V single-phase service. Many apartment buildings, schools and commercial spaces have 208V, and some have three-phase power. A kiln built for one supply is not a drop-in for another.
- 208V single-phase: same 48A draw, but 9,984 W, so the standard model is limited to cone 6. Skutt warns that a 208V kiln must never be fired on 240V without first installing a full set of 240V elements, and that 240V kilns should not be used on 208V.
- Three-phase: lower amps per leg (29.3A or 31.7A) and a NEMA 15-50 receptacle. It will not run on single-phase home service.
Amazon carries both a single-phase KM-1027 listing and three-phase ones. Before you order, confirm the listing says 240V 1-phase, and confirm your own service with an electrician. Our electric kiln guide covers matching any kiln to a circuit.
KilnMaster or KMT touchscreen
The standard KM-1027 has the KilnMaster 12-key controller: cone-fire presets, ramp-and-hold programs of up to 32 segments, 12 stored programs, built-in diagnostics, firing cost and firing count tracking, and current sensing that reads amps per section and voltage under load. That last feature helps you spot a weak element before a firing comes up short.
The KMT-1027 has the KilnMaster Touchscreen, which Skutt's catalog says has guided start, help screens, firing graphs, a log of the last 10 firings and built-in Wi-Fi for updates. Remote monitoring through KilnLink is covered in our Skutt kilns review and the kiln controller guide.
How much a Skutt 1027 kiln holds
Skutt's own counts give the scale: about 38 tea bowls 6 inches wide and 3 inches tall per load, a pot up to 23 inches tall, or a 21 inch platter. That is roughly three times the 12 bowls Skutt counts for the KM-818.
In practice, the furniture kit sets the layout. Skutt's 2023 catalog lists eight 5/8 inch half shelves, a large post assortment of 36 posts and an 8 oz bag of kiln wash for the 1027. With half shelves you can fire a tall vase on one side and stack mugs on three or four levels on the other. Count your tallest piece, add 5/8 inch per shelf and a gap above each piece, and you can plan four to five levels of mugs in the 27 inch depth.
A big chamber is only efficient when it is full. If a KM-1027 would often fire half empty, the KM-818 is the better buy.
Space, floor and lid
Skutt's catalog and manual call for at least 18 inches of clearance from walls, other kilns and shelving on all sides. With a 29 inch outside width, that means a clear square of floor about 65 inches (5.4 feet) across before you add a walkway. The manual asks for a bare cement floor, or 2 inches of masonry under the kiln extending at least 12 inches beyond it, no sprinkler head within 10 feet above, and a room that stays at or below 105°F and above freezing during firings.
The lid is heavy on a 23 inch kiln, so Skutt fits a lid lifter as standard on its 10-sided models and says it lifts 100 lb. The sectional design lets you take the kiln apart to move it through a doorway.
What a firing costs, worked from Skutt's watts
Skutt rates the 240V KM-1027 at 11,520 W, which is 11.52 kWh for each hour the elements run at full power. At an example rate of 15 cents per kWh, that is a ceiling of about $1.73 per hour. Real firings cost less than hours times that figure, because the controller cycles the elements on and off, especially early in the firing. Multiply by your own rate and the length of your schedule for an upper limit.
The KilnMaster's firing cost feature reports the cost of each firing once you enter your rate. Our kiln cost guide covers running costs and installation budgets.
Accessories worth pricing with the kiln
- Furniture kit: eight half shelves, 36 posts and kiln wash, as above.
- EnviroVent 2: Skutt's downdraft vent, 140 cfm on a 120V outlet with 8 feet of 3 inch duct.
- Rolling stand: listed by Skutt, with an adapter for the EnviroVent 2.
- KilnLink: monitoring service, sold in 1 year and 5 year plans.
- Type S thermocouple, APM elements and Easy View: Skutt upgrades; Skutt says APM elements give longer element life.
First firing and owner questions from Skutt's manual
Skutt's KilnMaster manual answers most of the questions new owners ask:
- First firing: load only shelves on 1 inch posts, fire to cone 04 on medium speed with no hold. Smoke and odor are normal as element oils burn off.
- Without a downdraft vent: leave the top peep plug out and prop the lid 1 to 2 inches until the kiln reaches 1,000°F (538°C).
- End of firing: plan to be with the kiln when it is due to shut off, and let it cool naturally. Unload at about 125 to 130°F; the manual gives both figures.
- Thermocouple: Skutt says to replace it after about 50 cone 6 firings or 150 cone 04 firings.
- Kiln wash: on shelves and the floor only; never on the walls or lid.
What the KM-1027 does well
It gives a large, deep chamber with cone 10 at 240V, and Skutt publishes every voltage and phase so an electrician can plan the job. The controller's current sensing and firing logs make element wear visible, and parts such as elements, relays and thermocouples are stocked by many US dealers. Skutt's warranty covers parts and labor for two years from the first retail purchase and is never pro-rated.
Weak points
The 60A circuit is the obvious one: wire, breaker and possibly a panel upgrade can add a real sum to the kiln's price. The standard model is cone 6 only on 208V. Shipping weight is 290 to 320 lb by freight, and dealers listed the KM-1027 as made to order in October 2026. Look-alike three-phase listings make ordering mistakes easy, and the 2.5 inch standard brick holds heat less well than 3 inch.
If you are considering a used 1027, check the nameplate for voltage, phase and brick, and note that Skutt also sold KS models with a KilnSitter instead of the KilnMaster. Our kiln for sale guide has the full used-kiln checklist.
The outside of a running kiln gets hot. Keep Skutt's 18 inch clearance, keep children and pets away, and vent the room. Clean clay and glaze dust with a wet mop, never a broom, because it contains silica, and wear a NIOSH-approved respirator when mixing dry glaze or kiln wash. Element and relay work involves live mains wiring: follow Skutt's manual or use a qualified kiln technician.
Who should buy, and who should skip
Buy the KM-1027 if you make enough work to fill 7 cubic feet every week or two, want cone 10 at 240V, and can add a 60A circuit. Buy the KM-1027-3 if you are on 208V and need cone 10.
Skip it if you are new and fire occasionally, if your only option is 120V, or if a 60A circuit is out of reach. Skutt also lists a larger KM-1227 at the same 48A draw for even taller loads.
Alternatives
- Skutt KM-818: 2.6 cubic feet and cone 10 on a 40A circuit.
- Skutt KM-1227: a taller Skutt at the same 48A draw.
- L&L kilns: Easy-Fire e23T models with hard element holders.
- Olympic kilns: 3 inch brick and published wire sizes.
- Jen-Ken kilns: the 2422 3" High Fire is a 50A alternative for cone 6 work, rated to cone 8.
Sources: Skutt KM-1027 product page; Skutt Ceramic Kiln and Wheel Catalog 2023; Skutt electrical installation sheet for contractors (undated, current October 2026); Skutt KM electrical spec sheet (rev. 9/13/99); Skutt KilnMaster Operating Manual (rev. 1/19/09); Skutt KS-1027 spec sheet; The Ceramic Shop KM-1027-3 listing; School Specialty KM/KMT 1027-3 listing; Blick KM-1027 and KM-1027-3 listings; Ceramic Superstore KM1027 listing. Specs checked October 2026.