Hi Mikkel, thanks again for sharing your experiences. Today I want to give you a tip! I once saw a teacher separating the TS using a soldering iron (I don't know if that is the name in english, but it is an equipment that can be plugged to eletricity to heat up). She puts the plastic container over another plastic container, drills holes in the lower limit of the pure water, and takes it out. Then she makes holes in the lower limit of the TS separating it from the rest, without pulling the liquid with her mouth.
Mikkel -- May I offer a suggestion that may make determining specific gravity even easier? I always use a syringe similar to the one you used here. I have weighed the syringe empty to determine its empty weight (28 grams). Now I just draw up into the syringe 100 grams (by volume) of the liquid to be tested and weigh the syringe again. If it weighs, for instance, 140 grams, I know that the SG is 112 (or 1.12) because I know that 28 grams is the syringe (140 - 28 = 112). To make it easy, I used Excel to chart out all possible readings between 110 and 170 so that I don't even have to do the math each time. I just look at the chart and if the scale says "155" I follow across to the answer -- SG is 127. (Actuall, my syringe is smaller so I draw up 50 grams, but my chart accounts for that by x2.) The chart hangs on my studio wall and looks, in part, like this: Scale Reads SG 90 -28 x 2 124 91 -28 x 2 126 92 -28 x 2 128 93 -28 x 2 130 etc. I hope this makes sense.
How did this terra sig recipe work out on your pots? Do you apply to a leather hard or bone dry pot? I'm hoping you have a youtube video showing how white it looks.
It works really well. Better than my first one. I apply it to bone dry greenware. You can see how I apply it here (using my first type of TS): th-cam.com/video/yJA2FJFBohM/w-d-xo.html
Hi Mikkel, a bit confused. Was EPK 316g or 1120g? And the water was initially clear but at 8.09s water seemed added with something? Did I miss out anything in this video? Look forward this slip to be applied and fired. Thank you very much.
No problem. You are very welcome to ask :-) It is 316g EPK. You can see the recipe here: th-cam.com/video/P-GdXTL1phw/w-d-xo.html What you see I am adding at 8:09 is the ball clay. At that point I already added the EPK. That is why the water looks that way
@@deMibPottery @Mikkel deMib - Pottery Tips They did turn out great! I must try the white TS too - one last question - I know from your other videos that you apply the terra sig to greenware, right? Do you bisque fire it then in a kiln first or does it go straight to pit fire? One of the bowls had a bisque-y sound to it in the video you shared (at ~3:53). I really like the aesthetics of your works - thanks for sharing your knowledge with us :)
Thanks. Yes, I bisque fire after the TS is applied. Keep in mind that the higher temp you fire to the less glossy it gets - but the higher, the less risk of flaking off. I have found that for my combination of kiln and clay 1000 C works the best
Hi. You mentioned you needed 1400 grms dry..then in the video you measured 316grms.of epk..then video jumps to you showing 1120 grms...I am unclear on what happened...what are the dry measures..epk? Ballclay?
Thanks. After I posted my question I used my excellent brain and figured it out. 😊 I wanted to use the EPK also as I had a smaller amount of Ball clay. Thanks for all of your great content.
what a wonderful blessing to have your kids making dinner. Thanks for the video, looking forward to seeing the results.
Thanks a lot. Yes, I am very lucky to have such amazing kids :-)
Hi Mikkel, thanks again for sharing your experiences. Today I want to give you a tip! I once saw a teacher separating the TS using a soldering iron (I don't know if that is the name in english, but it is an equipment that can be plugged to eletricity to heat up). She puts the plastic container over another plastic container, drills holes in the lower limit of the pure water, and takes it out. Then she makes holes in the lower limit of the TS separating it from the rest, without pulling the liquid with her mouth.
Thanks :-)
I know the method but I prefer to make larger portions and be able to reuse my container
I love yoir attitude to experiment! You help me a lot:)
Great work!thank you!
Happy to hear that! :-)
Mikkel -- May I offer a suggestion that may make determining specific gravity even easier?
I always use a syringe similar to the one you used here. I have weighed the syringe empty to determine its empty weight (28 grams). Now I just draw up into the syringe 100 grams (by volume) of the liquid to be tested and weigh the syringe again. If it weighs, for instance, 140 grams, I know that the SG is 112 (or 1.12) because I know that 28 grams is the syringe (140 - 28 = 112). To make it easy, I used Excel to chart out all possible readings between 110 and 170 so that I don't even have to do the math each time. I just look at the chart and if the scale says "155" I follow across to the answer -- SG is 127.
(Actuall, my syringe is smaller so I draw up 50 grams, but my chart accounts for that by x2.)
The chart hangs on my studio wall and looks, in part, like this:
Scale Reads SG
90 -28 x 2 124
91 -28 x 2 126
92 -28 x 2 128
93 -28 x 2 130
etc.
I hope this makes sense.
Thanks. That is a very good tip :-)
very good tutorial , thanks for sharing , greeting from egypt
Thanks 🙏
Hi Master ! Thanks for learn thhrough your videos D'ont understand EPK, what is this ? (sorry my english) Thanks, see you soon ....
Thanks. EPK is a kaolin
@@deMibPottery Thanks
How did this terra sig recipe work out on your pots? Do you apply to a leather hard or bone dry pot? I'm hoping you have a youtube video showing how white it looks.
It works really well. Better than my first one. I apply it to bone dry greenware. You can see how I apply it here (using my first type of TS): th-cam.com/video/yJA2FJFBohM/w-d-xo.html
Feldspar and China Clay for White Slip
Thats not the way I do it
Darvin 7 and Soda Ash/Minspar is mainly Soda Ash
I don't use Darvin
Will the tin oxide interact with the ingredients in naked raku and cause problems removing the coating after it comes out of the reduction can?
No, after it has been fired its sort of burned into the pot. The raku fire is not warm enough to melt it again.
please tell me, do you use terra siggilata in low-temperature or high-temperature firing?
I only use it for pitfire and naked raku with no glazes (so yes, low fire)
Hi Mikkel, a bit confused. Was EPK 316g or 1120g? And the water was initially clear but at 8.09s water seemed added with something? Did I miss out anything in this video? Look forward this slip to be applied and fired. Thank you very much.
No problem. You are very welcome to ask :-)
It is 316g EPK. You can see the recipe here: th-cam.com/video/P-GdXTL1phw/w-d-xo.html
What you see I am adding at 8:09 is the ball clay. At that point I already added the EPK. That is why the water looks that way
@@deMibPottery Thanks!:-)
Darvin 811 or Sodium Cicilate
I don't use Darvin
How did it turn out? I read that grolleg terra sigillata is white - have you ever tried it?
It turned out very well. You can see a video here, where I use it: th-cam.com/video/STgFcMIPl1s/w-d-xo.html
I do not use grolleg but EPK
@@deMibPottery @Mikkel deMib - Pottery Tips They did turn out great! I must try the white TS too - one last question - I know from your other videos that you apply the terra sig to greenware, right? Do you bisque fire it then in a kiln first or does it go straight to pit fire? One of the bowls had a bisque-y sound to it in the video you shared (at ~3:53).
I really like the aesthetics of your works - thanks for sharing your knowledge with us :)
Thanks. Yes, I bisque fire after the TS is applied. Keep in mind that the higher temp you fire to the less glossy it gets - but the higher, the less risk of flaking off. I have found that for my combination of kiln and clay 1000 C works the best
@@deMibPottery Thank you Mikkel, your advice is much appreciated. Let’s see how it goes! :)
Hi. You mentioned you needed 1400 grms dry..then in the video you measured 316grms.of epk..then video jumps to you showing 1120 grms...I am unclear on what happened...what are the dry measures..epk? Ballclay?
I used:
1120 gr ball clay
316 gr EPK
7,5 gr Sodium Silicate
3,3 l water
Thanks. After I posted my question I used my excellent brain and figured it out. 😊 I wanted to use the EPK also as I had a smaller amount of Ball clay. Thanks for all of your great content.