80 Concrete Coasters 👈 16 Silicone Molds 👈 8 CNC Master Models

80 Concrete Coasters 👈 16 Silicone Molds 👈 8 CNC Master Models

hey guys we’re Evan and Katelyn today we’re
gonna show you how we made these molds for our concrete coasters we sell
products wholesale to West Elm and this past December was our first holiday rush
and it was crazy the only way we could do it was by making a lot of these so
we’re gonna show you how we use our CNC to make mold masters and everything we
figured out along the way so we’re carving a high-density urethane
foam for the first time to make these masters that looks awesome just needs a little bit of let’s see how it’s going
how’s it look check this out isn’t that crazy all of the lines are gone 100%
non-porous that’s what we want for the mold we used to have to make these one by one
using this the single mold master we 3d printed and spent a long time painting
sanding painting standing a day’s worth of work whereas this we did in what less
than half an hour right seven more okay so why go through all the upfront
work of making masters and making molds to make concrete coasters when
theoretically we could just cut out some wood coasters on the x-carve and the
reason is concrete batches and scales really easily it’s just as easy to make
a huge batch as it is to make a single individual batch so we can make a lot of
coasters and it’s really cheap as a material you look like you’re ready for a party
the master molds are all sanded so what we’re gonna do make sure there’s no dust in here. and then we’re gonna spray mold release. you do need to shake it. wear a mask! we are going to stir these this is just one to one silicone so it’s pretty easy do we need directions on how to open it? it’s gonna get all over my jacket. ok I see what you’re sayin’ oh that’s weird it’s like so weird what am I doing?! it’s time are you ready for the
responsibility? no. so we’re gonna we’re try vibrating this seeing if we get any bubbles out. teeny teeny tiny bubbles so we poured the first four and we’ll just let these sit overnight! But we’re gonna take them inside because you have to let these cure right temperature. see how they do in the morning. aww she wants us to come inside too all right it’s the next day we made it a
little longer than four hours needed but we’re gonna go ahead and demold these
see how they turn out and see how our mold masters survived yeah fingers
crossed oh yeah kinda have to like break the seal I
see it oh yeah oh oh my gosh oh that’s so satisfying! oh it’s perfect! a little bit
moist still… still looks like it set properly it’s not that it was bad it just wasn’t yeah. that one’s better so three came out pretty good this guy is kind of a hot mess. he’s not cured at all I’m kind of hesitant to even
touch him and you can even see a lot of residue left I’m happy with what we made
just not what came out of what we made. we were having issues and we did some Instagram stories to ask for help and you guys are awesome you gaveus a lot of really cool ideas so we’ll
start with a few general tips we learned one is that if you pour from higher up
the thin stream of silicone coming out actually helps remove the bubbles
one more is to brush on a thin layer so it comes before pouring it in that way
it gets to any little nooks and crannies and then the last one i forgot what it was stir from bottom to top yeah cuz like when you stir it in a circle part B kind of sticks at the bottom
part A is at the top totally makes sense you have to stir like vertical also I
think the main thing that went wrong with this though though the best theory
is that this is Precision Board Plus it’s a high-density urethane but
evidently platinum cure silicone does not do well with urethan so we have
two options one we can fix or change the mold and we’re going to try coating this with primer automative primer or worst case scenario we go out and buy
some tin curing silicone and that should
solve the problem so keep on watching to find out what we do
I’m just prepping this wood mold that we made so that we can test doing the
automotive primer here and seeing if the silicone works with automotive primer at
the base before we spray it on to our actual pro precision board just to test things we use the stirring
brushing and pouring techniques we learned from you guys on the unprimed urethane – that is so clean all right this looks
great but before we jump to any conclusions let’s test this that we poured
at the same time because we applied some of the new tips and techniques we learned to both of these so let’s see if it was the tips and techniques or the mold material
yeah it’s better it’s still sticky hold both of those up show those corners that’s a
huge difference look at how much cleaner this one is that is so crisp okay so our
silicone type in the material we made the mold masters from is incompatible so
I think the way we’re going to move forward from this is to paint over this
and create a barrier between the mold master and the silicone using the same
primer that we did for this one the adventure continues you can de-mold I can film. there you go fingers crossed. it’s perfect is absolutely
perfect no bubbles fully cured not sticky that solved it. which one do I look at? we solved it yeah by we mean you guys
okay let’s get the rest of these de-molded and finish our coaster orders yeah we have a
lot to do when you’re mixing concrete a little bit
of water goes a long way you can add a bit more mix and/or water
as you go until you get the right consistency then agitate the molds to
remove bubbles ahahaha this looks weird alrighty while these cure we want to tell you about our sponsor Quikrete we love using Quikrete for our side hustle products because it’s not
expensive it’s also really easy to use because you just add water which is good
when we’re in a rush and we can scale it and keep our business just the two of us
because we can mix a lot at once for this project we’re using the Precision
Grout- where does it say Precision Grout, right here? because it’s really strong and we’ve
have to ship these to various West Elms around Texas and we don’t want them to
break now we just have to wait for these to dry and then we can start packing our
orders you can remove the form from the molds a little bit earlier but let them
fully cure before painting all the coasters got done our order is
sent off and now we have all of these molds for the next orders six months
later so we wanted to try something a little bit different with this project
and see how the molds and the coasters held up after making hundreds of them
over a long period of time so we poured these two coasters a little bit earlier
today we’re gonna go ahead and de mold them and see how they compare to the
ones that we made in the past. let’s do it. that was easy. how do they look? it looks better now this one obviously
has a little bit of moisture so it’s still curing up but this is perfect this is
just as we want it to be and the mold it’s good it’s good to go ready to use
right now to make another coaster that’s pretty exciting I mean I think that this
is a really awesome business model if you wanted to go down this route of
batching out a whole bunch of products we get a thumbs up now let’s do the
outro thank you guys for watching I hope you liked our video and if you did you
might also want to check out our aftershow which is where if we keep
talking about more behind the scenes stuff and there’s a lot for this one yeah so
we’ll have that at patreon dot com slash evan and katelyn and one thing that you
might have noticed in the past bit of this video are these cool new shirts
which we designed and made over the past couple months and you can get your own
over at shop Evan and katelyn dot com I don’t know why every time I do a URL
spread my arm is like it’s magically appearing it’s gonna be up here. Bye! step one. cut a hole in the lid alright that wasn’t horrible! got your wheels turning too hopefully oh I was twitching around like crazy it’s like 1am right now. this is how we spend our evenings! attacking goop! happy birthday to me! ah it is your birthday now! Happy birthday!

100 thoughts on “80 Concrete Coasters 👈 16 Silicone Molds 👈 8 CNC Master Models

  1. quick tip also if you didnt know concrete dust is not good for you and you should wear a mask with the right filters silica dust is what will hurt you.

  2. Something I’ve found helpful when casting concrete in molds like this is to put them on a wobbly table and attach vibrating back massagers to the table, it helps get the bubbles out and you can just fill and forget until dry.

  3. I love watching you Guys. You always have such a bubbly attitude and watching your videos make me so happy and relaxed

  4. I’ve recently gotten into yalls videos and I have loved every video I’ve seen so far. But I’ve gotta say, as soon as y’all said Texas, I subbed

  5. Hi, I was wondering wether or not you seal your coasters after you paint them, and if you do what do you use?

  6. At first I was like “ewww a couple YouTube channel” then after watching “awww they cute, subscribe”

  7. I made coasters out of extra tile squares and glued felt on the bottom of them. They’ve lasted me almost 10 years.

  8. Oh lordy I wish I had space to do this stuff. You two always look like you're having a blast, even when things are going wrong lol

  9. Kaza concrete tiles have a very smooth shiny surface finish. https://youtu.be/vfdtGUQHqV4 Do you know how to achieve said finish. Can you ask your viewers for help.

  10. Fun fact: Actually what you're using isnt technically concrete! Its precision grout which is closer to cement. Cement is not the same as concrete even though they are often used as synonyms. There is cement in concrete however, along with sand and stone.

    **Just for those who want to do this sort of product at home just make sure to ask for precision grout or cement! Not concrete.

  11. You didn't use plastercizer in your concrete pour. With plastercizer you use less water and the end concrete is stronger.

  12. Do you guys sell your coaster molds? I'd love to buy one! I just started getting into resin projects and would love to try making some coasters.

  13. Has anyone tried to use the 2" insulation foam boards say from Home Depot and then used filler primer? High density urethane foam is obviously the way to go but if you're just getting into this and trying things out it's hella expensive.

  14. Did y'all know we have 4 channels now? This main one, plus:

    🎮 Evan and Katelyn Gaming youtube.com/evanandkatelyngaming

    (us playing games and chatting, enhanced by epic editing and a heavy dose of memes)

    🎙️ Evan and Katelyn Podcast youtube.com/evanandkatelynpodcast

    (chatting about life, YouTube stuff, and playing games you can play along with)

    😹 Evan and Katelyn Too youtube.com/evanandkatelyn2

    (still figuring this one out 😂)

  15. Girl, I have that shirt, lol.
    I actually just found you two 3 days ago and I am in love with this channel! I am so sorry it took me so long to find you.

  16. You should use a vacuum former! it would make making moulds so much easier! pls get this to the top :))

  17. You can buy a small vibrator motor from mac master and attach it to a small platform and you can use it as a sort of "debubbling" station when you pour each one instead of tapping it. Or make a vaccum chamber.

  18. Do you think that that automotive primer would work on clay? I've got a sculpture I'm looking to cast and it has some low holes that need filling. Did you think the primer would take care of them???

  19. if you still doing this as a business , you could use a benchgrinder as a vibrator , replace the grinding stones with steel disks with a offset centerhole , bolt the grinder down to the table , it should vibrate the table pretty good depending how far offset you go with the offset hole , up to the point that the machine takes the whole table for a walk
    think washingmachine on the centrifuge cycle
    it should be enough to smooth out a whole table full of the moulds in one go after scooping them full

  20. hi, what is the name of the paper strip packaging you use around your coasters? where can I buy some? thank you

  21. you should consider building an agitation table to set to molds on (literally just a table that vibrates a little to get the air bubbles out

  22. I followed what you did in video but before I pour silicone, it gets hard and is not liquid anymore 🙁🤦‍♂️what should I do?

  23. Hola chicos los felicito por su Canal me Encanta, asi como ustedes, yo con mi pareja estamos realizando un proyecto y queria que me ayudaran con una pregunta, queremos hacer moldes termoformados a partir de una pieza impresa en 3D, pero en filamento PLA el calor del la maquina de termoformado la derrite, de que manera puedo hacer un molde usando la impresora 3D para poder termoformar. gracias chicos les agradecería mucho si nos ayudan.

  24. I started doing this years ago mad to see it here smh ugh. Oh well still going to go with my idea. Great coasters.

  25. Y’all should make a homade vacuum chamber because that can remove all of the air from the molds so u won’t have that problem

  26. Finally, someonebwho spells Katelyn the same as me! Stumbled upon y'alls channel and now I'm hooked!! Can not wait to get to work trying some of your suggestions.

  27. I know it is and older video and I dunno even know if you still make them but have you tried a pressure pot (or diy pressure pot *hint video hint*) to degass the silicone for no air pockets or bubbles before you pour the silicone in the mold?

  28. Ive been watching y'alls videos and just now found out that you guys live about 50 minutes away frome me on the other side of houston lol. Well hi from spring texas!

  29. Hey please wear ppe when mixing concrete face mask eye protection and gloves. In its dry form it's obviously not good for your lungs but wet the concrete becomes a highly alkaline material that can actually irritate and burn flesh.

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