Making a Slipcast Mug pt4: Casting Plaster Molds! - Tiki Technical Tuesday
Тәжірибелік нұсқаулар және стиль
The Hornbill mug adventure continues! In this episode we dive DEEP into…. plaster! That’s right! We put last episode’s silicone molds to use and cast an army of plaster production molds. Together we will cast a complete set of production molds, and as a bonus i'll do a round of BONUS TIPS for working with plaster. Plus: More Plaster Math!
Thank you all for watching Tiki Technical Tuesday - As always, put questions in the comments and I'll do my best to answer. Please subscribe!
VanTiki's web and social pages: linktr.ee/vantiki
Links! (please note, I'm using the Amazon affiliate program - If you buy something via these links I may get a small share of the sale)
Plaster Book Essentials:
Mitchell Spain’s book: mitchellspainceramics.shop
The Essential Guide to Mold Making & Slip Casting amzn.to/3q2rkP1
Tools:
Plaster trap kit amzn.to/3ecY4Eg
Vibrating mixing table amzn.to/3RbmnBa
Plastic mixer I use and love amzn.to/3bl1DDe
Chapters:
00:00 - Casting plaster part 1
18:56 - Plaster Tips & Tricks
25:52 - casting plaster part 2
27:49 - plaster math
Пікірлер: 90
I love your work. I love your filming. I love your editing. I love your storytelling. I love the information you give. I love the tips and tricks. I love your artistry. I love your workflow. I love your generosity in sharing your magic. Thanks for a brilliant maker's channel.
@vantikistudio
3 ай бұрын
Thank you so much! This made my day!!
It’s never too late for a Tiki Technical Tuesday!
@vantikistudio
Жыл бұрын
I agree!
@billdickey8847
6 ай бұрын
@@vantikistudio Hey there! Is there a scale or two that you recommend? Appreciate all of your informative content!
I'm very new to slip-casting (and ceramics in general) and have found your videos to be so helpful! Wish I knew the Windex trick before - I ended up using a few drops of Photo Flo in a small spray bottle on my 3D printed parts before casting plaster. Went from horrible bubbles to perfect surface!
@vantikistudio
Жыл бұрын
Happy to help! I was considering photo Flo as an option to try, as we used it back in my FX days to make fake blood flow well. Windex is definitely a cheaper option :)
ALWAYS a fun watch, and I always learn something new!
@vantikistudio
Жыл бұрын
Thanks Ted!
Wooohoo, new episode.!
@vantikistudio
Жыл бұрын
Thanks for watching!
Dude i think you deserve more than 8k sub.
@vantikistudio
Жыл бұрын
Thank you! I am super happy with the channel growth. Two years ago I had only 500 - I hope the trend continues ✨🤞✨
Hurray new episode! I'm so glad you guys are feeling better.
@vantikistudio
Жыл бұрын
Me too! Hopefully we’re up to full strength soon
Thiki Thechnical Thursday!
Your meticulous work and record keeping is exemplary.
@vantikistudio
Жыл бұрын
Thank you!
I keep coming back to this episode because of the wealth of information it contains. I need to get a plaster trap. And, I also need to get better at working with plaster.
@vantikistudio
11 ай бұрын
I need to change my plaster trap! 😅
i love you tiki, your work is amazing! cheers from argentina!
@vantikistudio
Жыл бұрын
Thank you!!
Amazing Episode!!!
@vantikistudio
Жыл бұрын
Thank you!
Perfect timing! I’ve been struggling with bubbles in my molds so I will try these tips!! Great video as always
@vantikistudio
Жыл бұрын
You got this! Best of luck in your bubble battle!
You’re a hero and an inspiration. Thanks for being so generous with your expertise!
@vantikistudio
Жыл бұрын
Thank you so much!
Been waiting for a new video. :) Happy to have you back and even more delighted that you have been so willing to share your techniques. Thank you!
@vantikistudio
Жыл бұрын
Thank you for your patience!
@____Ann____
Жыл бұрын
Me too!
Your videos are fantastic!
@vantikistudio
Жыл бұрын
Thank you so much!
Always thrilled when I get that notification. Even if it is on a Thursday. ;)
@vantikistudio
Жыл бұрын
Better very late than never 😅
this is so cool, i wish i could do something like this
@vantikistudio
Жыл бұрын
Thank you!
I love the dutch angle shots heh
@vantikistudio
Жыл бұрын
Thanks! It’s a great way to get everything important into frame
I don’t even make molds but your videos are always fun to watch 👀
@vantikistudio
Жыл бұрын
Thank you!
Ok, but why is one turned the other way... 😭😭 28:52 - Joking... mostly. Thanks for another great video. Really makes me wish I had the space to try this out 😁
@vantikistudio
Жыл бұрын
😂 - thanks for watching!
great video! I've been incredibly curious on how your make your artist mark into the bottom of your mold! Can you share how you do it?
@vantikistudio
Жыл бұрын
Thank you! I keep that part of my process a mystery. There are lots of ways to do it (I’ve done many techniques through the years)
Thursday, Tuesday, both start with a T, same thing. Love this series! Thanks for sharing so much of your skill and technique!
@vantikistudio
Жыл бұрын
I figured Thursday was close enough 😂 Thank you for watching!
Thank you for sharing so generously! I'm curious why you keep the silicon molds in the wooden frames beyond the process of making them? Do you store them like this? Sorry if you already shared and I missed it. Thanks!
@vantikistudio
11 ай бұрын
Good question! The wood case keeps the silicone from warping due to the weight of the plaster when casting. I keep the silicone nested in its frame when I use and store the molds.
Me again! Your video on making the silicone masters inspired me to try it and it was a wildly successful endeavor -- thanks to you and technical Tuesday! Now I need to know about your "Windex Mix" (which, given the nerves I was feeling casting that expensive silicone, ought to be a euphemism for "Whiskey -- make it a double!"): So what exactly is your "Windex Mix"?
@vantikistudio
2 ай бұрын
Congratulations on the mold success!! For the windex mix, I go between a 50/50 windex to water mix, up to a 2/3 windex 1/3 water mix. It’s a small container so there is a wide margin of error 😄
@joevalente8451
2 ай бұрын
@@vantikistudio fantastic -- thanks so much! I got my USG #1 plaster and I've filled my masters to find they take exactly 3qts of water per pair. So, as soon as my squirrel mixer comes in, I'll be trying your 3qts + 9lbs mixture and see what happens next!
Have you always used Pottery Plaster No 1 for mold making? How would you compare it to plaster of paris? Price difference is not huge either.
@vantikistudio
Жыл бұрын
Avoid plaster of Paris for molds! It may be fine for casting - but you will get MUCH better and repeatable results with the Pottery plaster.
First let me say, I think you’re a wonderful teacher!!! Your videos are the best. Thank you. Now if you could just drop by my shop and help me organize it I would greatly appreciate it. 😊
@vantikistudio
11 ай бұрын
😄 funny you should say that, my studio is a MESS right now! We’ve been going full steam since August and I haven’t had time to clean. We’ve scheduled a deep clean week in October and I CANT WAIT! 😂
Is there any problem with putting a wooden bottom on the box casing to support the silicone loaded with the plaster when you move it? I am planning on making some larger pieces and I’m nervous about the silicone folding out of the casing as I move it. Also I could put a drawing of the mold shape on the base to help orient it all. So, is it problematic overkill costing more, or a good idea?
@vantikistudio
Жыл бұрын
Not a problem at all! Hammerly Ceramics on Instagram 3D prints his silicone enclosure, and puts a base on some of them. I’ve seen other artists use a sheet of acrylic as a base. Why don’t I do it? Cost for the wood, concern about warping, and time. The mold boxes work well for me without a bottom. When moving large molds off the vibrating table, I just fill them 2/3 full, then move them off the table. Haven’t had any issues (well, aside from the fact that they are HEAVY)
I’m going back to rewatch this video and I have a question: why spritz the silicone molds with water/windex and not just isopropyl alcohol? I heard you shouldn’t use 100% windex because it may weaken the plaster. Wouldn’t the alcohol have the same effect?
@vantikistudio
3 ай бұрын
Great question! I did a bunch of tests in the studio trying various mixtures of water and alcohol, water and windex, and even some other things folks suggested like Jet-Dry rinse aid. In the end for me a mix of water and windex gave the best surface, and it doesn’t seem to degrade the plaster in any way. I suspect windex is mostly made of water and alcohol 😄
@B2000Z
3 ай бұрын
@@vantikistudio thank you!
How do you clean the tools without a plumbing nightmare?
@vantikistudio
Жыл бұрын
I have a plaster trap in the sink. It captures anything heavy (like glaze, plaster, and clay) and keeps it out of the pipes
My apologies: You answered my Windex Mix question in the video and I somehow missed it -- sorry I wasted your time. Something I didn't miss but want to confirm: Did you say the plaster molds need to be left to dry out for weeks before you use them? How many weeks? Thanks again!
@vantikistudio
2 ай бұрын
the molds need to dry completely before use - and that time can vary greatly depending on the size of the mold and the humidity of the environment. Airflow helps - put the mold under a fan and check it daily. When it no longer feels cool to the touch it is ready to go!
Hey Henrik, Do you slipcast using the original plaster mold that you used to make the silicone mold? Or do you just use the molds that you make from the silicone mother molds? I ask because I’m having trouble with my plaster master as it was covered in mold soap and now it’s not absorbing the slip properly. Is there a way to remove the soft soap without damaging the plaster mold?
@vantikistudio
6 ай бұрын
I rarely cast with my master plaster mold - but vinegar is great for removing mold soap if you do want to cast with it.
@ashleyfiona-ashkeeperscera8742
6 ай бұрын
Ahhhhh, thank you so much, appreciate your help 🙏🏼
18:55 What is a spray spray?
@vantikistudio
Жыл бұрын
It’s alcohol to break the surface bubbles
is it possible to use aluminum as mold? can we just machine an aluminum block and use it?
@vantikistudio
3 ай бұрын
it depends on what stage of the process you are talking about. If you are planning on slip casting, you can make you master mold out of aluminum insured of silicone. As long as it has no undercuts or steep angles and you release it well, I suppose you ould then cast you plaster molds from the aluminum mold, and then slipcast your parts in the plaster mold. you need a plaster mold for slip casting to work. kzread.info/dash/bejne/ZKiJmNV7dJzYj6w.html
Can you go over how you do your logo in the base ? .. how do you add it after you do the casting and before the silicone ? its not there after the initial plaster cast but is now .. what titki magic did you use ?
@vantikistudio
Жыл бұрын
That is the one step I like to keep a mystery. There are lots of ways to do it, and I’ve used various methods through the years.
11lb 11oz = 5.3KG (1KG=1L of water)
@vantikistudio
Жыл бұрын
Thanks! I always mean to put metric conversions up, and always run out of time 😅
where do you get your plaster?
@vantikistudio
Жыл бұрын
I get it from my local ceramics supply shop: Georgies Ceramics
what is the name of those buckets? they look safer for dusty materials
@vantikistudio
Жыл бұрын
They are great. Standard 5 gallon buckets from a home improvement store, and I put these airtight lids on the tops: amzn.to/3ZlDbtu
@carlosleon9580
Жыл бұрын
@@vantikistudio I went to investigate, the lid it's called "gamma seal",... at least here in Mexico, thanks for the tip
Pardon my ignorance but why not just make a a negative silicone mold of your original piece and slip cast in that? Seems like if that would cause issues then so would this ! But I've mever worked with slip or plaster. If it's because you use certain clays then there's some that can be used with tin cure and some that can be used with platinum cure I'm pretty sure
@vantikistudio
4 ай бұрын
The catch is you can only cast slip in plaster molds - believe me I’d use silicone molds for everything if I could! Here is an explanation of why plaster makes slipcasting possible: kzread.info/dash/bejne/ZKiJmNV7dJzYj6w.htmlsi=ZLn-UmH0rLDX_SS8
I'm confused about how the lettering ends up in the bottom of the mold. When I watched the mold making video it seemed like the bottom of the mug model was flat.
@vantikistudio
Жыл бұрын
good eye! That is a part of the process I like to keep a mystery. There are lots of ways to do it, and I've used many different techniques through the years.
..put the mold on subwoofer and play some freaking techno.. no bobbles no nobody will occur.
@vantikistudio
Жыл бұрын
😂
Van i wonder why do you use a mask? is this toxic? what are safest practices on this? thank you
@vantikistudio
5 ай бұрын
Any dust can be bad for your lungs, and gypsum (plaster) is a very fine dust. I like to wear a respirator any time I mix plaster and handle plaster in its dry powder form
@diegogutierrezdtv
5 ай бұрын
Thank you!! aprecciate it@@vantikistudio