Handheld Clay Extruder Buyer's Guide

The Shimpo Nidec Handheld Extruder comes with 5 aluminum dies and one blank.

The Shimpo Nidec Handheld Extruder comes with 5 aluminum dies and one blank.

Handheld extruders or “clay guns” are useful tools for making small runs of handles, coils, and small hollow forms. If you are looking to make a repeatable shape in a quick, efficient way, then a handheld extruder is what you need.

These extruders work like a caulk gun: you fill the barrel with clay, screw the cap over the die form, and repeatedly squeeze the trigger to push clay through the die. It can be a bit of a wrist workout, so definitely use soft clay with these.

There are four options when choosing a handheld extruder: 2 sizes from Scott Creek, and one each from Shimpo and Kemper. There are also two miniature clay extruders such as the Kemper Klay Gun, for making extremely small shapes, which I’ll cover at the end of the post.

It’s really a coin toss as all four handheld extruders are well made, but for most studios and hand sizes, I would recommend the Shimpo Handheld Extruder. For about the same price, the Shimpo Handheld Extruder comes with a few more dies than the Scott Creek, and I prefer the circular handle at the back as opposed to the bar handle on the Scott Creek models. And as this is a handheld extruder, I prefer the shorter and wider barrel of the Shimpo because it is easier to squeeze out the clay.

A full review of handheld extruders follows, including the three options from Shimpo or Scott Creek, and two options for smaller decorative clay extruders. For larger extruders, check out our guide to wall-mounted extruders here.


Table of Contents

  1. Shimpo Handheld Extruder

  2. Scott Creek Super Duper Clay Gun and Clay Gun XL

  3. Kemper IKEG Klay Extruder

  4. Small Extruders: Kemper Klay Gun and Bailey Clay Gun

  5. Summary



Top Pick: Shimpo Handheld Extruder

The Shimpo Handheld Extruder comes with 5 dies and one blank die.

The Shimpo Handheld Extruder comes with 5 dies and one blank die.

The Shimpo Hollow Die Kit has 8 shapes. The middle of each shape is screwed on to the larger piece at the bottom.

The Shimpo Hollow Die Kit has 8 shapes. The middle of each shape is screwed on to the larger piece at the bottom.

The Shimpo Handheld Extruder is a quality tool that lets you easily make shaped coils, small hollow forms, or handles. It’s basically a caulk gun with an aluminum barrel and dies. The threaded barrel is 2 1/4” wide and about 10 inches long. The entire model measures about 13 x 9 x 3 inches, weighs just a few pounds, and can easily be stored in a drawer. It can be entirely submerged in water for cleanup, but you may want to oil the hinges and moving metal parts as needed.

Shimpo 4-in-1 Die Kit has 8 shapes of varying sizes and an isolator die.

Shimpo 4-in-1 Die Kit has 8 shapes of varying sizes and an isolator die.

The Shimpo Extruder is the top pick because the kit comes with five dies and one blank, and I prefer the circular handle. I also find the the shorter barrel makes it easier to squeeze out the clay, even though that means more frequent refilling. But it’s really a coin toss if this is better than the Scott Creek Clay Gun and the choice really comes down to personal preference. In my studio, I use a Shimpo Handheld Extruder along with a mixture of dies from Shimpo and Scott Creek.

Shimpo has two die kits: one with a selection of eight hollow forms and another with eight “4-in-1” shapes of varying sizes. You can extrude all four sizes at once, or use the isolation die to select just one. The hollow forms are what most people go for, as those shapes would be extremely hard to make without a die, but both kits would really expand the options in your studio.

The Shimpo Handheld Extruder generally retails for around $60 and the die kits are about $40 each. You can find this tool at ceramic supply stores or online at Blick.


Scott Creek Super Duper Clay Extruder and Clay Extruder XL

The Scott Creek Super Duper Clay Gun.

The Scott Creek Super Duper Clay Gun.

The Scott Creek XL Clay Gun has a 15” barrel.

The Scott Creek XL Clay Gun has a 15” barrel.

Scott Creek makes two handheld extruders and five die kits. The Super Duper Clay Gun has a 10 inch barrel while the XL has a 15 inch barrel. Both feature a bar handle at the rear as opposed to the circular handle on the Shimpo. The barrel is 2 inches wide, which is 1/4” smaller than the Shimpo. Note that the Scott Creek die kits will definitely fit the Shimpo Extruder, but the Shimpo dies may not work with the Scott Creek guns. Both Scott Creek extruders come with one coil die and two blank aluminum dies.

The Scott Creek Handle Die Kit features 8 shapes cut out of clear acrylic. The Scott Creek Dies are compatible with the Shimpo Extruder.

The Scott Creek Handle Die Kit features 8 shapes cut out of clear acrylic. The Scott Creek Dies are compatible with the Shimpo Extruder.

Scott Creek extruders are rugged, well built, and will get the job done. They are a bit harder to find in stores, but are readily available direct from the manufacturer. Scott Creek also makes a hollow aluminum die kit with the same shapes as Shimpo, along with an aluminum die kit of small forms. There are also three die sets made out of clear acrylic including a “shape and coil” kit, tile trim kit, and handle kit. The handle kit is my most used die kit and I would recommend that kit regardless of which extruder you purchase.

Although it might seem attractive to use the larger XL Extruder, keep in mind that the longer barrel may be harder to clean and store, and it is that much harder to squeeze clay out. (Any handheld extruder really relies on wrist strength.)

The Scott Creek Super Duper Clay Extruder usually retails for around $55-60, and the XL goes for around $70, and the die kits generally cost about $40 each.



Kemper IKEG Klay Extruder

The Kemper IKEG Klay Extruder

The Kemper IKEG Klay Extruder

The Kemper IKEG Klay Extruder is an interesting offering from the venerable clay tool manufacturer. It’s even longer than the Scott Creek XL, with a barrel measuring 20 inches in length by 2 inches wide. It comes with 3 aluminum coil dies, 1 blank die, and 2 plastic spouts.

As stated above, I feel that a shorter barrel is easier to use but if you decide to go with this option, you can always just fill the barrel with less clay to make it easier to use. Aside from that, the trigger of this gun is virtually identical to the Shimpo with a circular handle. Kemper has a limited offering of dies, but Scott Creek dies will work with this extruder.

The Kemper IKEG Klay Extruder typically retails for around $60 and can be found at ceramic suppliers such as Bailey.


Mini Extruders: Kemper K45 Klay Gun and Bailey Clay Gun

These miniature clay extruders are useful for making texture or super small coils, such as for hair. They also work with polymer clay, so if you are working in miniatures, this is the clay extruder for you. For typical clay studios, these mini guns often sit unused in studio drawers but if you need a really specific shape, they may work for you. They are virtually identical but the Bailey set also comes with a handy plastic carrying case.

The Bailey Clay Gun is a miniature extruder.

The Bailey Clay Gun is a miniature extruder.

Bailey Clay Gun

The Bailey Clay Gun has 19 dies and a carrying case. It typically costs around $13. Make sure that whatever you put in the barrel is very soft.

Shop at Bailey

 
kemper-k45-klay-gun.jpg

Kemper Klay Gun

The Kemper Klay Gun also has 19 dies and typically costs around $13. It may be exactly the same thing as the Bailey Clay Gun, but it doesn’t have a case.

Shop at Blick


Summary

Handheld extruders are a great way to make small batches of similar shapes, such as handles or hollow shapes. For a long time, I thought of them as an extraneous tool but once I started using them, I found that I really liked the look of extruded handles. Definitely don’t get one of these if it will simply sit unused in a drawer.

With only four models on the market, all are basically the same with just a few minor differences, so you can’t go wrong. For me, I prefer the slightly wider and shorter Shimpo barrel but my favorite dies are the handle kit from Scott Creek. You will find your own combination that works for you.



Best Wheelthrowing and Pottery Sponges

Tack Sponges are economical, long-lasting synthetic sponges that are great for wheelthrowing and ceramic studios.

Tack Sponges are economical, long-lasting synthetic sponges that are great for wheelthrowing and ceramic studios.

For pottery and wheelthrowing, it is important to have a long-lasting sponge that doesn’t shred and fall apart after a few sessions. There are quite a few high-quality options these days, and also a lot of cheap generics that fall apart almost right away.

My favorite pottery sponge is a basic synthetic round yellow tack sponge. Designed for cleaning horses or polishing leather, these are also great for use in a ceramic studio. Tack sponges are more dense and long-lasting than other synthetic sponges, are comfortable, and get the job done.

There are a variety of tack sponges available for sale online, typically in 12 packs. Look for a a quality brand, such as Decker (and avoid Creative Hobbies “tack” sponges, which I believe are mis-labeled).

In addition to tack sponges, natural sponges and speciality pottery sponges are good options. You can also cut your own sponges from larger yellow sponges or upholstery foam. Our full review of pottery sponges is below, along with some ideas of the best ways to utilize sponges when throwing.

For a full review of heavy duty, rectangular yellow clean up sponges, click here.


Table of Contents

  1. Best Pottery Sponge: Tack Sponges

  2. MudTools Sponges

  3. Xiem Sponges

  4. Natural Sponges

  5. Other Sponge Options and Sponge Holders

  6. How to Cut Your Own Sponges

  7. Ways to Utilize Sponges in Wheelthrowing

  8. Summary



Best Pottery and Wheelthrowing Sponge: Tack Sponges

Decker Tack Sponges.jpg

Tack sponges are the best option for a pottery and wheelthrowing sponge. Soft but long-lasting, these synthetic sponges are also economical. Designed for cleaning horses, tack sponges have a fine-celled structure that is perfect for wheelthrowing and other uses in a ceramic studio.

To be honest, it can be hard to distinguish between synthetic yellow sponges, especially when shopping online. But through experience, I’ve learned to avoid sponges such as the “Creative Hobbies 25 pack” and other generics. These generics lose their loft and fall apart within a few weeks and while they may be fine for sponge painting or light-duty uses, they are generally not suited for intensive tasks such as wheelthrowing. That’s why it’s best to pay a bit extra and get tack sponges.

On Amazon, Decker is a brand you can trust (click the button below to shop). And if you have the chance to visit a ceramics store in person, you may find Kemper yellow sponges or other high-quality, round, yellow synthetic sponges.

Decker Tack Sponges are 3 inches in diameter by 1 inch high, and are available in a 12 pack that typically works out to a cost of about $1 per sponge.


MudTools MudSponge

The MudTools blue, orange, and white sponge.

The MudTools blue, orange, and white sponge.

The MudTools sponges are rib-shaped, and measure 2.63 x 3.75 inches.

The MudTools sponges are rib-shaped, and measure 2.63 x 3.75 inches.

MudTools makes three speciality sponges designed for use in ceramics. Shaped like a traditional pottery rib, they are available individually or in a 3 pack. The sponges range from a typical open-cell sponge structure to a fine-pored, denser sponge. MudTools calls these:

  • Workhorse, blue, (corse porosity)

  • Absorbant, orange, (medium porosity

  • Finishing sponge, white (fine porosity)

The blue “workhorse” sponge is the most similar to a typical yellow round tack sponge, so if you want something fine, go with the orange or white. Many prefer the densest white sponge for use as a wheelthrowing sponge, but all three will work on the wheel or for handbuilding.

The MudSponges do cost more, usually around $5 to $8 each, but are long lasting and the range of sponge density does give you options.


Xiem Studio Pro Sponges

Xiem Studio Pro Sponges

Xiem Studio Pro Sponges

Xiem Tools makes two Pro Sponges which are circular and have tapered edges. Available in corse, medium, and fine porosity, these are great sponges to add into the mix with a yellow tack sponge. They are modestly priced, typically around $4 each, are long-lasting, and do the job.

They are great sponges but there seems to be some supply chain difficulties, as they appear to be sold out everywhere online. You may see them in stores, and if so, they’re worth considering for your next throwing sponge.


Natural Sponges

Natural Sponges are a great option for pottery, and many potters use these exclusively.

Elephant Ear Sponges

Elephant Ear Sponges

Elephant ear sponges are dense, tough, thin, and are great for wheelthrowing. They are long lasting and do hold up to intensive use. While they are a favorite for many potters, I find them a bit too thin to hold comfortably while throwing, but I do use them for finishing and smoothing. It really comes down to how you hold a sponge and what you need them for. The sponges are available in different sizes, look for something around 3” wide or bigger. You can always cut sponges smaller if needed.

Value Sponge set wt wool, silk, and yellow sponges.

Value Sponge set wt wool, silk, and yellow sponges.

Other types of natural sponges, such as Wool, Silk, or Yellow sponges are great for decorative effects, such as sponge painting with underglaze, but I find them to be either too open or too prone to falling apart to be used for wheelthrowing. Your experience may differ.



Other Sponge Options and Sponge Holders

Creative Hobbies has a 25 pack of 2 1/2” round sponges

Creative Hobbies has a 25 pack of 2 1/2” round sponges

Generic round yellow sponges are available in bulk under a variety of names (sometimes mislabeled as tack sponges) such as Creative Hobbies. These may seem like a great deal, and they are good for sponge painting or other light-duty uses. But these sponges will not stand up to the intense use needed for wheelthrowing. Expect them to lose their loft and fall apart within a few weeks. I’ve order packs from Creative Hobbies a few times, but never again! Learn from my mistakes and stick to tack sponges, as detailed above.


Round Sponge Set.jpg

Round Sponges or Stipplers (sometimes labeled “Spouncers”) are one of my favorite sponge tools to use for glazing and other decorative effects, such as adding polka dots with glaze or underglaze. Available in sizes ranges from about 1/4” to 1” in diameter, these are a great addition to your decorative arsenal. There are not really any brand names, so go for a set that looks good to you. I’ve used both the blue foam and yellow foam; my instinct is that the blue foam is a bit finer and more long lasting, but both will work ok. They do break down over time.


Sponge Holders are a helpful tool for wheelthrowing and are most handy when you need to get water or slip out of the inside of a vessel. (If you leave water inside a pot you’ve just thrown it can cause cracking, uneven drying, and other problems). There are two main options for this: The Kemper Sponge Holder and the Xiem Tools X-Sponge Telescoping Sponge Holder. Is a tool like this really necessary? It may be, if you throw a lot of jars or vases with a narrow mouth. They can really help collect extra water or be used to smooth the inside of a vessel.

DIY TIP: If you don’t want to buy one of these speciality tools, you can take almost any stick (such as a drumstick) and attach a sponge to the end with a rubber band.

The Kemper Sponge Holder.

The Kemper Sponge Holder.

The Kemper Sponge Holder is a 13 inch long hardwood handle with a screw and small cup washer at one end. It comes with a sponge, and if that wears out, you can easily replace it with another sponge. Simple, effective, and durable, this is a great addition to your tool kit.


Xiem Telescoping sponge.jpg

The Xiem Studio X-Sponge 2 is a telescoping sponge holder that can extend from 8.5 to 26 inches, so it can really be deployed on some large pots if necessary. The sponge is a dense, long lasting, white foam sponge and there are proprietary replacement sponge heads available too. The sponge is very fine porosity, similar to the finest Xiem round sponge or the MudTools white MudSponge. The telescoping sponge holder is a real innovation and like all Xiem Studio Tools, is thoughtfully designed and well made. The dense, rounded sponge does give you more control than the yellow sponge attached to the Kemper stick.


How to Cut Your Own Sponges

ProPlus Grouting.jpg

One of the most economical sponge options is to take a large yellow clean-up sponge, and cut it into 8 or 12 pieces. My favorite sponge is the Armaly ProPlus Grouting and Concrete sponge, which is the best heavy duty clean up sponge I’ve found. (See a full review here).

To do this, you can draw lines on the sponge with a sharpie and then using a sharp chef’s knife or scissors, cut into pieces. The best way is to plan for 12 sponges—which is a pretty good value when you start with one large sponge.

It’s also great to cut big yellow sponges into pieces as they start to fall apart. These can be repurposed for clean-up sponges or use a rubber band to attach them to a stick for a DIY sponge holder.


How to Utilize a Sponge for Wheelthrowing

I prefer to throw with one sponge in my right hand. The sponge doesn’t necessarily touch the clay, but it is helpful for organizing my hand in a comfortable way, and as a small water reservoir. But there are as many ways to use a sponge as there are potters.

A few quick tips on sponges and throwing:

> When throwing, try holding no sponge, 1 sponge in your throwing hand, or 2 sponges (one in each hand). You will quickly find the method that works for you. Two sponges may be a great way for beginners to get the feel of clay and help focus the pressure.

> Keep in mind that you should have one point of pressure on the inside, and one on the outside. This could be a fingertip, a knuckle, or use a sponge to make that single point of contact.

> The best sponge is the one that is most comfortable for you. Check out the advice above, and try out a few sponges. Experience is the only way to figure out what works for you.

> Set up a large yellow sponge for easy clean up of your wheelhead or any spills / splashes. They are also great for wiping your hands. I wipe and clean my hands often when throwing, especially if I am going to touch a switch on the wheel, or switch to a shaping tool such as a rib. Large yellow sponges are the best way to quickly clean your hands.


Summary

This post has reviewed small sponges for use while throwing on the wheel, and given advice on other sponge tools along with a few DIY tips and ideas of how to use a sponge. The top recommended sponge is a synthetic round yellow tack sponge, but there are a lot of options.

What sponges do you use? Any tips for sponges and wheel throwing? Let us know in the comments.