EASY PERLITE OVEN - Part 2 - Building the oven tutorial
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- Опубліковано 9 сер 2018
- PART 2
Tutorial of building a Perlite Oven.
Ratio for perlite concrete:
5 parts Perlite
2 parts WHITE cement
2 parts water
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MATERIALS LIST:
For the form:
Plywood 1000x1200mm
Wood for the legs
Screws
1 fit ball 60litres
Door Form:
Plywood 1000X700mm
Scrap pieces
Flexible chopping board
staples
screws
Scrap offcuts for the chimney support
Water bottle 600ml
Perlite Mix:
Oven shell - 60-70 litres of medium grade perlite (P240)
White Portland cement
Chicken wire to fit over the oven shell
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About Food Related
Hello! My name is Tom. I'm a teacher and creator.
I love making stuff, but especially when it's got anything to do with food.
I love to grow food.
I love to build food contraptions/inventions/creations.
I LOVE to eat stuff!
Follow me on Instagram:
/ food_related_growbuildeat
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www.instructables.com/member/... - Навчання та стиль
Thanks for the video. It proves to me that I can lined inside of my furnace like your building the outside of your oven it's just in reverse. Thanks again
Glad I could help
Great video, great idea! Followed the instructions to build an oven in our garden. It survived its first winter in Germany with ice and snow without issues. Now I can serve pizza better than any restaurant around.
Fantastic!!
This was very satisfying! also, good job! :D
You can prevent the cracking by using fiberglass or straw in your mix thanks for the video
Nice concrete Oven
Thanks for watching
Great video thank you for shearing👍👍👍 is perlite safe for cooking?
Yep
May I can use this material to make constant die for aluminum???
looks like you made this oven a few years ago - how has it stood up to use in that time? Any cracking?
I think when I try and do this I'll shape the chicken wire on the ball b4 any perlite is applied, then you have your form ready for action.
Sound like a good idea
Great set of videos, can you make a base out of the same cement to perlite ratio to cast a base for the oven to sit on ?
Yes and I think it would be more durable than vermiculite. You would be better off setting firebricks into that base as well.
I mixed 6 parts perlite, 1 part refractory concrete, 1 part Portland cement, and water for the pizza floor, under the tiles, It's been curing for 5 days, but it hasn't fully hardened yet. I can still dent the surface with my nail. Could it be that I used too much water, and it won't cure properly? Or will it just take more time? Or could it be the mix itself?
If you had to guess, how much would that mixture way as a 4'x5'x2" slab?
What size ball and how big the hole.I have an 850 ball so how far does the ball fit in.Thanks
Could you use this perlite mix to build a clay brick oven?
Muy buenas noches soy colombiano me podría ayudar q ingredientes fue lo q utilizo y q dimensión del horno mil gracias x su ayuda bendiciones 🙏
Does anyone use their perlite oven during the winter or colder months? WOndering if that would cause it to crack more easily with the big temperature changes
Hi, thanks for sharing your design and giving such detail in how to actually make it 👍 I have one question..... What weight was the finished product? Wondering how easy they are to move you see. Thanks and keep up the great tutorials. Again fantastic work 👍👍
Thanks for watching and the feedback!😁
I never actually weighed the shell but I was able to shift it by myself. Easy to lift with 2 people. I’d guess around 40 kg?
Thanks for the swift reply, that's perfect! Have a good day.
Great video! I’m about to start building my own this weekend. One question: does the outside of the structure get hot to the touch? If so, how hot? Because I would like to mount my oven on some wood pillars. Thanks!
Warm to the touch, not hot.
In the video you said 5 parts of perlite and 1 part cement, but in your video description it is 5 parts perlite and 2 parts cement. So which is it?
What is the difference between this recipe and the (portland cement, fireclay cement, silica sand and hydrated lime) recipe?
Have you put chicken wire in all layers you made it from perlite?
Greetings from Germany Can you Write me What Material is Needed to Build a Furnace? Aleksandar
Would the chicken wire expand when hot and cause cracks
Hi.
Thx for the vid!
I have seen a couple of similar ones now and all seems to be using a Portland based concrete mix.
Why not use a fireproof mix instead?
I am just about to start building so I'm a bit curious.
/Andreas
Andreas Yngvesson I would say cost. Fire cement would be a lot more expensive. However If you get it cheap it would be a good option.
@@foodrelated Thx for your reply. I've got a couple of bags over so I'll give it a try with fireproof. :)
@@andreasyngvesson2722 would like to know how yours turned out with the refractory cement instead of normal cement and any other insights you have discovered and would like to share would be much appreciated. Thanks
Hi i haven't read all other comments,but could you maybe shape your chicken wire with the form before adding your first layer then you could put it on without damaging the first layer,just a thought 💭
very cool stuff after its dry how much does it weigh compared to a regular cement brick ...lets say the cent brick was 4 pounds would this perlite brick weigh 2 lbs or less? also if you did 2 parts perlite to 1 part cement you would get a heavier stronger brick( less brittle etc) ? correct? thanks for sharing.
great video. did that sheet you used to cover the chicken wire come from "The First 48"?
No not sure what that is! Will have to look it up...
Give us an update on the current condition of the oven, did the structure stay intact with the added chicken wire, are there any serious cracks you noticed not talking about hairline cracks have you thought about other ideas to strengthen it but still keeping the costs as low as possible
Making that video today. Stay tuned.
me intereza hacer uno igual. kedo muy bien. por favor si podrian darme los trucos o alguo para no fallar agradeceria mucho el apoyo
juan cuba abisrror sigue mirando los videos y ellos deberían ayudarte a tener éxito
Any one know could u do the two coats and then normal sand and cement as a finish coat would that be ok?. Hope to build my own soon
Did that on our first vermiculite oven which is now 5 years old and the plaster coat is fine. You could even colour it with pigment...
Perlite is good for the outer layer of insulation. But don’t you also need an inner layer (stones / bricks /) to accumulate heat? Thanks..
You could if you wan to spend a lot more money...
We4 have found this works really well...
Great oven. Can you tell me what the outside temperature of the oven is when in use?
Thank you
depending on time of use, if it is lit for 4-5 hours it is still ok to touch the outside.
tompeyton1 what is the diameter of the chimney you used ? Great set of videos 👍
keeps it well in the heat, how long it took from you made it until it was dry enough for you to use it
Thomas Ørjansen leave for at least 4-6 weeks to avoid cracking and heat with a. Small fire to start.
Hey....ive been watching a lot of these diy pizza oven videos...ppl use so many different ingredients like clay, cement, concrete, perlite, and vermiculite. I was wondering if u knew which mixture makes the sturdiest and most heat resistant oven.
Perlite oven would be my go to, unless you can build a clay brick oven which would be best.
Hi,
I am going to build a perlite pizza oven and wonder if I need to add additional insulation outside the perlite dome?
What is the outer surface temperature of your oven?
(My oven will have an inner diameter of 96mm and be 100mm thick)
The last one I built was a similar thickness and gets warm to the touch on the outside.
You could add additional insulation if you like...
awesome...dont think I could build one as fast as you tho....is it still working?
Yep still going strong
Thank you for the video!
Could you advise? What brand of perlite in the UK is similar to what you used (EXPANDED PERLITE P400 MEDIUM), because I find it difficult to make the right choice. Thank you in advance!
You could give this a go...
www.amazon.co.uk/Plant-T-100L-Perlite-Bag/dp/B0085UXVUI
Food Related mate thank you very much! Bless you!
Great job. Do you mine me asking is this really heavy once made or would 2 men lift it. Also does the outside get very hot? In terms of children burning hands of touched.
Thanks
2 people easy lift
Gets warm but not hot on the outside
I thought for a pizza oven you had to use refractory cement. Will using perlite withstand the high oven temperatures?
Perlite is a good insulator also. Even good enough for rocket stoves.
But why using an insulating stuff for building an oven?
Would it not be better to have the oven build from heavy mass that can retain heat better and using perlite outside that heavy inner layer for insulation?
Is the cement refractory cement? Nearly four years later (end of 2021), have there been any more cracks other than what you reported a few months ago?
No more cracks no.
Regular Portland cement.
Is it normal for lots of little "crumbs" to come off during the curing stage?
That's happening to me, day after I built the first layer
Hi. Can you recommend any online shop that sell that kind of perlite ? Prefereably one that ships online because I cant find that here in the Philippines. They only sell small packs which are so expensive
Need to find a horticulture wholesaler.
Great video! I’m looking to buy the materials, do you know how much perlite you used for making the oven? Thanks!
60 litres approx for the oven. Depends on how thick you make it!
Food Related thanks!
Oops. Just realised the mix ratio you mention in the video is wrong. Didn’t see the instructions. I mixed 5:1. Do I need to pull it all off and start again?
See how it goes... hopefully it works
Hello Lindsay, please let me know what happen with your oven, with the 5:1 mix!
@@christianhicks2022 It’s good. Only the first layer was 5:1. I corrected for the following layers. I think it’s good to make the mixture a bit wetter. Have dried out slowly and used. Works really well.
Working on mine now. Letting it dry for a week or 2. I've noticed a lot of people adding the fire blanket insulation on top of the perlite coat then finishing off with a sand/cement mixture. Is the insulation really necessary? Or mainly just to hold the oven temp longer to cook other foods (other than pizza) as the oven temp drops? I was thinking about skipping this step...
Completely up to you.
I’d say adding the insulation would extend the life of the oven though.
@@foodrelated Ok thanks for the input. I may give it a shot...just have to fight with the chicken wire...and don't want to make it too heavy, as mine I will be moving around periodically. But you're right.
Any cracking after use? Wondering about the chicken wire.
Spoke to the owner a few months ago. He said there was a small one but only in the top coat, so sounds like the chicken wire did the job…
Did you use only one bag of perlite (100 litres) for the whole project? Thanks!
Yes
with the use after a while , can you confirm --> crack or not ? thanks for reply
After 2 years of use 1 small (20cm) crack near the back. Only in the top layer though.
Any cracks?
That's great!
When you close the door does the fire keep on burning? What is the air inlet?
The fire burns a lot slower with the door shut. We tend to just leave it ajar if we want the flames to keep burning.
No vents
Yet!
Quick question please; what is the dry time of perlite / concrete mix?? Thanks
At least 2 weeks before removing fit ball.
6-8 weeks before first firing.
Food Related thank you Sir
Have you used, or would you use any Refractory Cement on the inside as a protection? Thanks...
I have on one oven we made a few years ago, and yes I would use it again. It takes the heat way better than Portland which can eventually crack after a few years.
The downside is it makes the oven a lot heavier and is more expensive to make.
@@foodrelated I saw another video where someone just made a "paint" and applied it... is that what you did? or did you add it to the Perlite mix? Thanks again..
FYI... new Perlite version started yesterday, I didnt get to finish it in one day, I will fiish it later today... but so far, looking good!!!
any cracking on dome how is perlite holding up?
No cracking so far!
Bonjour très travail quel ciment avez vous utilisé quel quantité pour le four et dimension du four merci
J'ai utilisé du ciment Portland blanc. Cependant, il peut mieux fonctionner avec du ciment réfractaire.
Food Related merci
Hi are all perlite the same or are there any specific perlite to build oven? And what kind of cement is ideal to use that can with stand the heat and last longer?
Most perlite you buy for gardening purposes are fine to use.
You can use refractory cement, it’s just way more expensive...
@@foodrelated Hi thanks for all the information. I was wondering did your oven crack and how long does it retain the heat? I have heard a lot of people saying the perlite or vermiculite is a good insulater but does not retain the heat is this true?
@@foodrelated thank you so much for your reply, I appreciate your help. More power God bless
why do i never see plastasiser used in these kind of builds
Do we have to protect the outdoor perlite oven from rain?
Depends on the final hardness of your mix once dry. Someone else who made one left it out in the elements and it was fine.
Hi! Question: is it 2 part cement or 1? Cause I’m the video you say 1 but in the description you said 2.
2
You need to change your video then!
At the beginning of the video you say 1 part cement and that’s the mix I’ve just used today!
Then later on you say it’s 2 parts cement!
I hope my dome will be ok now with only 1 part cement in the mix... :-/
IF I use ciment fondu ... what color i will have it please
Nizar Lamin not sure... maybe you should do a small test brick?
@@foodrelated ohh really i need white color ..;(
@Food Related; is the chicken wire you used galvanized? Can't find any that isn't..
Yes but it has a layer of mix between it and the inside so it is not exposed.
@@foodrelated I see, not really sure if the fumes from galvanized net could cause any health issues....
How much perlite do you need to build this aprox? Thanks !
100 litres will do it
Hi do you know where we can get the ausperl perlite p400 in the usa
Have a look on amazon or a horticulture wholesaler...
Thank you
How hot does the outside of the oven get? Do I need to add a fiber blanket to keep the heat away from the outer part of the oven?
Bill Will you can add a fibre blanket. This will give it more insulation and extend the life of the oven.
Without the outside of the Oven just gets warm.
@@foodrelated This is incredibly frustrating. I am using perlite and refractory cement 5:1 mix. I cannot get the render to go up the side without falling back down. What I did get done seems to crumble. I covered it with a damp sheet so it would not dry too quickly, but even overnight it still does not harden, the render crumbles. What am I doing wrong?
Perhaps up the cement or reduce the water
@@billwill8067 Never before have I related to a UA-cam comment as strongly as this one. After all the time I spent building the base and form, I'm now just watching the mix crumble in my hands and refuse to stick to the sides of the form...
Hey Tom, what size the pilates ball is? I could just find 65cm diameter.
Aaron Rodriguez 65 is fine, just over inflate it slightly. Really depends on how big an oven you want!!
@@foodrelated wow, that was a fast response!! This will be my first attempt making one of these wood fire ovens. I am going to open a small snack bar, and since I love making pizza I thought It would be a good idea to try one of these and have in my menu some good pizza!
Greetings from México city
Aaron Rodriguez if you want bigger pac a layer of moist sand around your ball. I’ve gone as thick as 10cm more.
Hi one small question if I may. In the description you give the ratio as 5 perlite to 2 cement but in the video you say 5 to 1 cement. Is there a mistake or is the ratio different for the first and second layers? Thanks.
I meant to say 5:2 in the video.
@@foodrelated ok thanks. I can't seem to find refractory cement where I live, only refractory mortar. Do you know if that would give a better result compared to portland cement?
@@foodrelated Please take this down and re-dub it! I just followed your 5:1:2 instructions and my percrete mixture just wouldn't stick together at all.... it was like trying to get the wet perlite itself to form up but it just kept crumbling and falling off the table. This is a huge mistake!
Is it the same perlite used for agriculture?
Yes
How many kilograms did you use cement and perlite?
Not sure as I made it by volume not weight.
It would vary depending on the thickness you make it.
how thick do you make the wall?
About 100mm in total. You could go thicker if you like.
Hi buddy great video, how much perlite did you use please?
In description
Food Related thank you
How did the chicken wire work out for you ?
Very good. No cracks.
cuantos litros de perlita y cemento usaste para el domo
Matias Lazo 20 litres approx of perlite and 3 kg approx of cement
@@foodrelated amigo . cuanto tiempo le das para desmoldarlo
Matias Lazo allow 1 week then deflate the fit ball.
Great video. How much perlite did you use? Cheers
A 100litre bag will do it all
@@foodrelated how much cement?
how many Kgs of Perlite did you use plz?
Not sure of the kg weight as I bought it in litres. The oven shell will use around 60 litres depending on how thick you make it.
The camera died just about dropping the 6th part of cement and ss per the water you put in the mix 4 parts instead...now om confused
About how much was the final weight on this?
Never weighed it.
Probably around 40-50kg
Hi where do you purchase the perlite? I'm guessing this is the uk?
This was in New Zealand.
Agricultural warehouses will have it.
Amazon around £20 for 100L
Hi, thanks for the video,
First, do you recommend to convert the white cement with anti fire cement ?
Secondly, i didn't understand if the cement perlite proportion is 5:2 or 5:1 ??
Thanks !
מתן משה you can use fire cement if you can get it.
The proportions are 5 parts perlite, 2 parts cement
@@foodrelated thank you for the fast answers.
did the perlite white cement mix works well with out cracks so long ?
Can you detail the size of the tunnel?
I've made my own yesterday, created the first layer and will add the wire and second layer in a few days. I checked today and it's quite 'flakey' with pits of perlite falling off. Is this normal?
If you followed the mix ratio it should harden up as it dries. Mine was a bit ‘crumbly’ until it dried.
Can I use grey cement?
Yep
Hello there. Your videos are great! I am considering experimenting a little on making my own oven here in Florida USA. Can you tell me how you removed the form from underneath the oven after it dried? Did you list the oven or does the fit ball get pulled from the bottom? Also did you make the base out of perlite too? Thanks. -Tim
Ball was deflated and then the shell just popped off
Hello, I like your build, is your cement a special heat resistant one or a regular cement. I am little bit confused i see lots of names in the market. like Mortar mix, Portland mix or refractory cement.
Can you please advice.thanks a lot. 👍👍👍
Portland by the look
I used white Portland cement, but as already commented if you want to spend more money you could use refractory cement which is better for high temperatures.
@@foodrelated Thank you all for replying, is there anyway we can mix our own recipe to make refractory cement like: mixing cement, hydrated lime, clay and perlite for exemple?
Why don't you use any sand in the perlite and cement mix
Originally trying to keep it lightweight, more of an experiment really.
I don’t think there is a negative to adding sand.
can you use a pearlite oven to cook meat?
Yep
Thanks, would the food be similar to bbq food?
cement from indonesia ;)
Where to buy perlite
Horticulture store or amazon
Some say use permite some say vermiculate...I'm confused
Thanks! I'm halfway done with my oven....I'm pouring the floor today where the brick dome will be standing on...
Que tiempo de curado estimas
Probablemente 3 meses
tompeyton1 y el anterior cuanto demoro el de vermiculita
Lo mismo, alrededor de 3 meses
Estoy por fabricar uno
Matias Lazo great!
How much perlite do you need?
I used about 90 litres (Volume)
No cement???
Wernichtfragtbleibtdumm. Yes. We used white cement.
Wonderful mould. Way to much water in that mix though.
Yep I know!!!
@@foodrelated It was lovely seeing it turn out well once dry. Great shape
Dude needs a concrete mixer! 🤗
Why does that look like a giant Ball Hitch for a trailer LMAO…
Crack???
I think you added too much water.
Perhaps a little! It has dried out really well though.
Instead of using the chicken wire , just buy a pound of fibre strands/ fibre glass strands and mix it into your cement. Fibre strands are used in cement to build reenforced bridges it also works the same as horse hair did wist plastered walls back in the day
Could do if it was in the outside layer. Not sure how food safe it would be though.
wrong , the dome can not be in perlite , because cement is not heat resistent , it wil crack , you need to use fire briks or Refractory cementto make the dome
I did a 5:1 ratio and it failed cracked the next day and then I did 4:1 still failed.
Was it a hot day when you made it?
Food Related I gave up I did 3:1 ratio and still broke apart. So there’s the story I stopped.
Sounds like your mix was too dry...
The description and your commentary give two different mix ratios.