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Mark C.

Member Since 09 Jan 2012
Offline Last Active Today, 01:11 AM

#91478 Cheers To Art Teachers!

Posted by Mark C. on Yesterday, 01:20 AM

( Some of you probably have no idea of the sad state of some public schools in Mississippi) its also that way in many other states now as well-cheeers to all teachers in my book.

#91176 1800 Degrees....looking Good.....snap, Sparkle, Fizz, Pop. Dang!

Posted by Mark C. on 20 August 2015 - 08:51 PM

Any corrosion and looseness will always end badly with that much amperage. Drawing those amps will alway reveal any flaws.

#91092 Members With Etsy Stores?

Posted by Mark C. on 19 August 2015 - 04:39 PM

Looks like you sold a bong.
Thats one toke over the line.

#90689 The Arts Festival Plan

Posted by Mark C. on 11 August 2015 - 11:13 PM

I'm away now on a show trip-left last Wenesday for Friday Saturday Sunday show-took a liesurly two days to get there-now am spending three extra days scuba diving in Puget sound in a dry suit taking underwater photosmini vacation with a fellow diver) and will drive home on Thursday-so 8 days away. No kids juat a wife and a cat. Most shows are gone 7 days total out of state.

#90003 Double Dip Flakes Off When Drying

Posted by Mark C. on 01 August 2015 - 09:17 PM

325 will flux (melt better)I gave up 200 decades ago.
Allowing your 1st glaze to dry completly will help with any double dipping.
Cobalt glazes are notorious for crawling. I know thats not your issue-your glaze has no clay in it to make it stick.So in the big picture it may be your issue.
I have no idea why your calcining zinc?
This is usually done to epk so it does not shrink to much and flake off.

I do not think the 200 mesh to 325 will do a thing to your flaking
You have such a high % of feldspar and silica and so many colorants this is bound to get powdery with no clay to stick it.
All I can add is what did you do different?

#90001 Studio Lighting Led Bulbs To Replace T-8's

Posted by Mark C. on 01 August 2015 - 09:07 PM

I do run my lights lot so half the cost makes sense to me.Since retrofiting is so easy-thats why I'm posting this energy saver. They also run cool compared to ballast lights.Another asspect is outside in cold weather they do not flicker at all.

#89975 Studio Lighting Led Bulbs To Replace T-8's

Posted by Mark C. on 01 August 2015 - 12:16 PM

I read an article in home power magazine about LED florescent tubes. They bought them on e-bay to replace T-8s for about $12 each.The t-8s draw 46 watts the led use 20 watts.
I have a boat load of t-8 fixtures in 4 and two bulb configurations.
Since then I have replaced about 9 fixtures most in studio and some in kiln loading area. I still have about 5 left to do but am now testing them. They come is warm and cold lights and clear and striped (diffused).I have mixed some warm and cold in the studioand the light quality is good . Outside kiln area I want the most light so I chosse the 6500 clear bulbs. These are all plastic lens and are made in china. They say 50,000 hours.
These bulbs operate on 120 volts and you need to cut the ballast out of the circuit. So one end of fixture wires to the nuetral the other end wires to the hot wire. You can leave the ballest in place or remove it.These tend to be brighter or as bright as the t-8s.In our area we have expensive power so this will make sense in the long run-within two years the bulbs will be close to free..

#89932 Can This Piece Be Salvaged?

Posted by Mark C. on 31 July 2015 - 10:37 PM

The more you want it the less it will make it thru.
Just saying-


#89881 Source For Wine Glass Tops

Posted by Mark C. on 31 July 2015 - 01:48 AM



#89809 Throwing Thickness

Posted by Mark C. on 30 July 2015 - 01:49 AM

This is my story-When I was in Art school I tried to make potato chip pots-ones that where real thin. That was a goal .It was the esthetic to strive for at the time.
Later in business I found they broke if you looked at them wrong from my customers. I gave that up when folks would bring back broken wares to order more. Since the 80's I have made wares that are thick enough for daily use. This may mean different things for different folks. This is not a one answer fits all deal.But as to your question does wall thickness equate to quality -well no it does not.
What I have found is a pot should feel as thick as it looks. So if you expect it weigh nothing it should look that way and vice versa. I make my pots for the rigors of daily use now. Yes I can throw potato chips but have found out the hard way not to. I want my customers to enjoy the wares for many years and super thin pots are not going to do that.
As to widely held beliefs from buys well thats a pie in the sky deal-most buyers are just not that aware I have found.sorry if this is so blunt but its my truth.
Now if you like thin pots make thin pots as its what you like to do. Thats really the best thing.
I decided to make thicker durable wares about 35 years ago but I have no issues with that as I'm making pits that I feel will hold up over time and like that spot just fine. I always trend to thin and have to correct myself during production runs but I think about this every week as to how long they will last.

#89727 Firing Glazed Plates

Posted by Mark C. on 28 July 2015 - 07:41 PM

Sometimes the customer is not right.



#89607 Turning Off Kiln Prematurely

Posted by Mark C. on 26 July 2015 - 06:28 PM

This looks like a bisque fire and the fish had some paper inside form and its burning out-which smells and looks burnt? If this is the case go ahead and fire no big deal.


#89481 Pots in Movies

Posted by Mark C. on 23 July 2015 - 09:59 PM

My mug on Mike Rowes somebody has to do it is top featured compared to this low budget film -Humboldt County.


If you want your pots in a film I suggest doing  lots pottery for about 40 plus years and sure enough it just happens,

#89419 Adding A Lid Element

Posted by Mark C. on 23 July 2015 - 02:19 PM

This is a basic thought process-elements in lids want to fall out from grafity-so they must be pinned in -at cone 10 (the range that I have 40 years working in) is extremely hot and elements will want to sag big time-simple physics.
As to casting tell us the process-you poring in metal or doing burn outs or something else?More info on what you are doing would help.

#89415 Pots in Movies

Posted by Mark C. on 23 July 2015 - 01:38 PM

Mark, it can't be that terrible a movie.  IMDB ranked it 6.4 out of 10.


I'll look for it, since the counterculture is a particular interest of mine.


"I have pot in a movie its a bad movie at best called Humboldt County-"


I'm just guessing, but I bet a lot of people in that movie have pot.


(Sorry, couldn't resist.)

The move has a pot theme(not ceramics)-my bowl in on dinning table in one scene in house . The only way you can see it is freeze farm-my wife noticed it .