
A professional potter, Rogier earned a degree in Fine Arts from Indiana University, Bloomington where he studied under the late Karl Martz. Rogier exhibited and won his share of first prizes, but now spends most of his time teaching and demonstrating. All of his current work is by commission only. Working in stoneware Rogier has created many, many special commissions, including the trophies for the US Olympic Swim team that was meeting the Russian Olympic Swim Team in1980. Both Ellen and Rogier helped with the organization of the very first Penrod and Broad Ripple Art Fairs in Indianapolis in the early seventies. When, after attending both shows for over ten years, their son Elias came into this world Ellen and Rogier closed their store and gallery in Indianapolis and moved to the country to raise their son. The pottery is now part of the total Donker Studio "endeavor". That "endeavor" is spread throughout these pages and hopefully offers but a hint of what life can be like if given over to Our Creator, God Himself!
![]()
Click here for the Eucharist Slide Show
Click
here for the "Terra Sigillata" story
This file above is over 2 MB and may take a while to download.
![]()
Thanks to the Internet, distances and separations between nations and individuals have become ever smaller and friendships are developed throughout cyberspace. One such friendship has developed between myself and Muazzez Unal. Following age old Turkish tradition Macik's forte is decorating, with paints, pots thrown by her potter friend Sinan. The pots range in size from a few inches in height to 30 inches tall. Sinan's pots are glazed with locally processed Terra Sigillata that renders a smooth, slick and semi shiny surface. Macik's free hand decorating techniques boggles the mind as she re-creates ancient designs in a manner that might be rather foreign to American eyes but is none-the-less worthy of a closer look. A visit to her photo albums online will be an inspiration to those wanting to be enthused by ancient decorating motifs on classic pottery shapes. The creations of Muazzez and Sinan are a in a class all by themselves!
![]()
A day in the studio.
Since winter is starting, the house building activities are grinding to a temporary halt and because of that, there’s time available to spend some time in the studio. It’s been too long!! Those mugs and ice tea glasses I threw back “WHEN???” really should be finished up! Better make some glaze samples and get the mugs and ice tea glasses covered with the basic white glaze. Glaze samples are easy to make: squeeze some clay in your fist, flatten out the end and inscribe that flat surface with the glaze name. There are always some dry “mice” (which is what the glaze samples are called) sitting on the shelf in the glaze lab. After the name of the glaze is inscribed on the flat bottom, the mouse is dipped in the glaze, sometimes two or three times. Sometimes overlapping the basic white, sometimes overlapping basic white AND another color. I will use “greenish”, bluish” and “brownish” versions of the basic white as well as combinations thereof. The test kiln is a now forty-year-old Amaco 67E which used to have

a top firing temperature of 2000 degrees Fahrenheit. Slightly modified with additional insulating brick and heavier elements I “souped up” the small kiln years ago so that it would fire my samples all the way to 2350 degrees Fahrenheit if needed. I generally fire my ware at cone 6. (around 2185) Once the samples are in the kiln it is time to pour, re-pour and dip the ice tea glasses in the basic white glaze. The white glaze is mixed five gallons at the time to facilitate dipping and pouring. Dipping and pouring are basic glazing techniques that are fast and easy, the only possible draw back is that the techniques do require a large amount of glaze. Having been trained as a “one-fire” potter, I have never bisque fired any of my ware. To this day I thank Karl Martz for introducing me to that money saving technique back in graduate school! One has to be somewhat careful glazing “green ware” so as not to break the piece while handling it during the glazing process. In forty some years I’ve only broken a couple of coffee mugs…

So here’s the table with a bunch of ice tea glasses. Glaze is poured into the next one in line, the one that was just emptied is then dipped into the five-gallon bucket to glaze the outside and in two quick moves the job at hand is done. By the time the dipped one is placed on the table, the one with glaze inside is ready to be rotated and emptied into the next one and the story repeats itself. In a matter of minutes all the glasses are glazed! Very efficient!

Coffee mugs are a little trickier to glaze. Years ago, when Amaco marketed a portable Raku outfit and I traveled the nation as “Mr. Amaco” these specially designed tongs were part of the outfit and were very useful picking up 2000 degree hot pots. When I, in that previous lifetime, designed the tongs I also had in mind to use them in the glazing process. They come in really handy when used to pick up a coffee mug or any small item that needs to be dipped in a glaze. The “green” mug will be crushed when one squeezes the tongs too hard of course, but THAT only happened a couple of times, back when I was young and inexperienced in such delicate matters :-) Glazing a coffee mug never went this fast! Once upon a time I figured out that it took less than five minutes to produce a coffee mug: thirty seconds to throw the basic shape “off the hump”, (no trimming needed if the throwing was done correctly) one minute to pull the handle and attach it to the mug, thirty seconds to glaze the thing and the remaining three minutes to fire, handle and ship/sell the creation. Back when I threw over a couple of thousands mugs and ice tea glasses a year these very same pair of tongs got quite a work out!



To this potter nothing is more pleasing than to see a table full of identical thrown items. The basic white glaze will be allowed to dry thoroughly before further glazing takes place, so we’ll be working next door in the cabinet shop for while. I’m still amazed and humbled that my hands can actually throw a bunch of mugs one day and build a house the next…
When the ice tea glasses and coffee mugs were thrown they were all about the same size and diameter. After a few years of throwing measuring each and every mug or ice tea glass falls by the way side as the potter’s hands develop a “feel” for just the right size of each particular shape being thrown on a regular basis. Most potters have about eight to ten basic shapes that they have down pat. Bread-and-butter items like ice tea glasses and coffee mugs are among the first shapes the sensitive fingers of the potter “recognize.”
Even though the shapes on the table are within an eight to quarter inch the same in both diameter and height, now is a good time to really match the sets up. Out of the table full there will be a couple of “large” sets and a couple of “small” sets. Each set will consist of six or eight pieces and when all the matching is done there will always be a few “dogs” left over...

Dipping the white glazed mug into another color requires a certain amount of finger dexterity. Pushing outward too much with the fingers will land the mug in the re-claim bucket… In order to mix up as little a quantity of colored glaze to dip the mug in, it also helps if one has a suitable container that is suited for the shape to be dipped. In this particular case the flexible rubber mixing bowl does the job!




…and there they are, ready for the kiln.
When the mugs were dipped in the glaze they were placed directly on the non-absorbing surface of the worktable. There the glaze dried and the next day the mugs could be removed without trouble, leaving just a bit of glaze residue on the table surface which is easily cleaned up. Since the mugs are glazed all the way around, they will have to be stilted in the kiln. I’ve used nichrome wire star stilts

in the pottery since the beginning, the proverbial “life time” ago. During the firing the mug will shrink, of course and the nichrome wire points of the star stilt move inward during the shrinking of the mug as illustrated in the picture below.

Pushing the point on the metal edge of the worktable downward points the point back towards the outside and the stilt is ready for use again. I can hear the question now: How often can you bend those little points and how long can you re-use those stilts? Well… I have about two hundred of them and I’ve used these same stilts for over thirty- five years. During that time I have lost maybe twenty…. Pretty good investment if you ask me!


Placing the mug on the stilt just right is a bit tricky, but not all that difficult. The novice might be surprised how hard and solid the mugs feel even though they have not yet been fired. The coats of dry glaze help in strengthening the “green” mug and make handling quite safe and easy!

Loading the kiln can be a challenge, especially when there are still three mugs to go and seemingly no room to place them. To get that last mug in place can be tricky! The closer the pieces are the better heat distribution in the kiln so it behooves the operator to pack as much in as possible!


…and then the lid to the old HF 101 was shut and the firing commenced…

The substantial handle and the balancing nub make for a comfortable and very “drinkable” mug. The curve of the lip guides the liquid into one’s mouth, not onto the sides of the face!

Basic cylinders that have their bottom third scalloped into an octagon become very easily held ice tea glasses or hot chocolate drinking vessels. As with the coffee mugs the slight curve of the lip aids in the “drinkability” and therefore practicality of these hand thrown shapes.

Should you like to purchase a set of the above come and see us!
Click here to view the order page.
![]()
Every once in a while the pottery department spills over into the cabinet department and /or vice versa. Such is the case here, as I am restoring a twenty seven year old Amaco #3 C potter's wheel with motor attachment. The erstwhile "Cadillac" of the Amaco line of potter's wheels. Unfortunately, because of manufacturing costs, this particular wheel was taken out of production "eons" ago. Somebody besides me is going to be very happy to lay his or her hands on this! If you are in the MidWest and are interested...we will deliver!
![]()
Click here for Rogier's Classroom Manual.
From the ordinary and mundane utilitarian ware to the scraffitto technique on an 18" diameter bowl to the classic design of a Greek rhyton to the masterful art of hard edge wax resist decoration on a very tall (26") bottle form. Rogier's stone ware creations are found all over the Midwest, California, Canada, nay, the WORLD !!
Click here for the history of the Raku Process.
Click Here for a PDF file of the Raku Firing Process
You may need to download
to view PDF
files.
Like the Raku? Click here to order your very own Raku piece!
Rogier has whipped up a few batches of pottery pictures. Click on the links below to see them.
Pottery Batch 1
Pottery Batch 2
Pottery Batch 3
Pottery Batch 4