Building an OVEN out of a BBQ to THERMOFORM Acrylic PLEXIGLAS
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- เผยแพร่เมื่อ 26 ส.ค. 2024
- There's an old saying that reads 'necessity is the mother of invention' and right now we need an oven to thermoform the plexiglas windshield for the 1955 Mercury 'Elvis' so we're going to build an oven out of an old junked BBQ 🔥
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#badchad #thermoforming #thermoformplexiglas #acrylicthermoforming
ITS AMAZING WHAT CHAD CAN DO IN A HOUR...AND ON THE FLY...NOBODY COULD DO THIS IN AN HOUR,,,,,AMAZING WORK. IMAGINE IF YOU HAD AN EMPLOYEE WHO COULD BUILD THAT IN A HOUR ...YOU WOULDNT BELIEVE IT ......AGAIN SKILL AND EXPERIENCE AND WISDOM...
My 2 cents. There's a ton of crud in that burner box (no doubt most of it is meat drippings). Once you enclose the top and fire up the burners, all the fine particulates will circulate by heat convection and embed themselves into the softened plexiglass. I would suggest getting that burner bay squeaky clean next. Maybe even sand blast it then paint it with high temp (BBQ) paint. Then, to keep crud from falling into the burner bay, cover it with some of that perforated "firewall steel". This perforated cover would also act as a heat conductor to more evenly disperse the heat. Not too high on using plywood either. Maybe corrugated steel?
Maybe a sheet of metal going across the bottom over the flames with holes throughout it. That way you dont flame your windshield.
A BBQ can work as an oven without much issue but you will have some hotspots from the burners. I am sure you will be able to figure it out. I have used propane burners and made my own for a things. Right now with all the burners in the middle, it will be hotter there. Some fans to mix it and spread it is needed. I would use electric ones instead of those stove top fans because you have the ability for speed control and therefore the mixing regardless of the temperature. Those other fans will run depending on the temperature. Lower temperatures slower until they get heated up. Other than removing them, you can't slow them down or use them below the setting of the Peltier element in them. If you can only find plastic electric fans, just have the air blow through a conduit and keep them away from the heat and they will operate fine. Too close and they can over heat or melt. They do this in solar heating setups where the collector can get extremely hot. No way to mount a fan close by.
I would think the glass transition temperature of the plexiglass glass would be different from the vinyl wrap. Both easy things to look up. If they are close to the same you should have no problem applying the vinyl on top of the flat plexiglass and then baking them both. If the vinyl is lower it would be at risk of burning and discolouring. If it is higher, then it probably wouldn't but you would have to heat it up afterwards probably outside of the oven. I hope it works out and look forward to your experiment.
Chad. You don’t want to heat that plexiglass to quick. Bubbles will form. About 160 degrees for a good base temperature. The gasses inside the molecules of the plexiglass will start to expand if it’s to hot. Keeps this in mind. Once you get it dialed in you’ll be able to make any bends.
I would put the vinyl on after because the outside layer would have to stretch and the inside would have to shrink. Just my opinion.
ou may want to consider if the mould may do some warping of the mold and you eill probably want to wait to put yur wrap on after its cooled down. The biggest thing is to make sure to burn off any animal fat so that it doesn't get imbedded to the windshield and let it cool slow as possible. With the acrylic I did it has a realproblem with any moisture so the longer you heat the oven and mould the better is what worked best on the race car. Just saying. I wish you the best of luck. run a feww test pieces first ! It's really going to be great with the wrap on it ! What a great idea !
You can tell he's a metal guy. If your going to use ply wood, make a box 2 ft high x 6 ft long x 2 ft deep. plywood comes in 4 x 8 ft sheets. split in half makes 2pcs 2 ft. x 8 ft. Cut off two 6 ft pieces and two 22 1/2 inch pieces. Nail the four pieces together into a 2 ft x 6 ft rectangle. No metal angle needed. 40 nails have held caskets together for centuries. Cut a 2ft x 6 ft piece for the top. Leave it loose to get in and out. cut two pieces of metal to fill in the bottom on either side of burners. drill and nail onto the bottom. Done no metal angle, no welding. Drop on the grill as is. Put the grill back together when done.
I would think the plastic wrap would melt or shrink. When I was watching full custom garage and Ian did this I think he was in the 300s doing full bubble tops. But he did it just like you. Built a box and put 4 bbqs under it.
The plastic wrap will shrink when exposed to heat, you are better off, aplaying the plastic to your window when material is cool! On the burners to spread the heat evenly roll two pieces of sheet metal with an even opening left and right and you don’t need electric fans.
If the box is closed wont the heat rise to the top? 250° is really not that hot
Repurposing a BBQ to be a specialty oven for making windshields. Chad is being very creative with this idea. Jolene's videos are amazing too!
Better still, inverted V defuser plates to direct the heat into three zones
I build cars ...I build bikes ...I build bbq ovens to make glass...my name is Chad Hiltz...lol ...awesome
I went to a car show this morning and they had a 1955-56 mercury there, it was fully restored and it was beautiful. I recognized the body lines as soon as I saw it.
Did I start something?.,.. sorry bout your Barbee lol. Make this dual purpose, you can bake powder coat in it as well. Just a thought here, make a false bottom with sheet metal, and vent it out both ends, this will give you excellent heat dispursement and also keep the oven section dry, propane gives off water vapor as it combusts…
You could also build the same thing vertically, which is what I may do, and run the exhaust up
The back side which will also help to distribute the heat evenly.. I like the fan idea…
I'd line it with foiled insulation board (fire rated). Cheap. Energy efficient. Better than wood.
It's great to watch how creative you are with old car parts. You truly are a great artist.
YOU ARE AWESOME CHAD,,,,,,,,,,,,,,,,,,,,,,ITS A PLEASURE TO WATCH, YOU AND YOUR WORKS OF ART AS I CALL IT,,,,,,,,,,,,
Wrap may try stretching, or subject to heat. I think applying wrap after forming windshield will be safer an practical. Ask someone about heat temp wrap can withstand without deforming
This is going to be a very expensive experiment if he goes through with it. The cost adds up quick. I have a ton of respect for Chad’s effort but in the end he will still only have a piece of plastic.
I just hope that whoever is giving him advice knows a little bit about what they are talking about
Hey Chad , just a suggestion, you could weld a piece 1/4” or 1/2” flat stock all the way around top at the bottom of angle iron to have solid place to screw your plywood too !!! Thanks for being so awesome & Jolene thanks for such great videography , and i understand you look amazing 😻 today !! 💕 🚗 🔥
Hey Chad, you could also use this new oven as a rotisserie for cooking whole pigs or sheep when your not using it for windscreens. Great when your having an open day make a few extra dollars on selling food. You will attract Aussies from every where {could be a good or a bad thing} we love this sort of cooking. P.S. Jolene hit Chad for a new BBQ a super duper one.
Might be a good idea to put a heavy piece of steel about 2 inches above the gass burners would help with heat distribution
I think you should cover the pit with metal so there isn't an open flame inside the box. Let the flame heat the metal cover which will dissipate the heat even more. A "Muffin" fan in each end of the box would circulate the heat. I built a convection oven out of plywood at one time using 250 watt bulbs and muffin fans. I only had to reach 150 degrees which it did easily. Again, Opinions are like noses, we all have one. :-)
Yes 250°F is not really very hot
I built my oven 6’ tall 5’ deep and 4’ wide it’s all electric with three 3,500 watt heating elements
With no fans . I can heat it up to 500 degrees Fahrenheit. It’s for powder coating.
Simple and effective been using it 4 years now .
You built yourself a nice meat smoker! Put the temp gauge nearer the bottom 'cause heat rises. Fan nearer the top to push heat down. Glass on the ends would let you see it cooking. 250 F will be no problem, but I doubt you can hold 450 (powder coating) on propane. 1" styrofoam insulation on the outside should handle the heat and stabiliize things, but you shouldn't need it with plywood. Having the vinyl film on will affect the draping a bit because it will hold the drooping edges up, but maybe not a lot. Might get a goopy mess on the first try, hope not!
With pots of water on the burners, would make a nice steam bender for wood too.
A 43,000 BTU propane space heater complete with fan could have been purchased for $159 saving a lot of time and effort and would likely perform better.
Not only that, but you would have a functional space heater for future use to keep you warm in areas that might require it. No need to destroy a functioning BBQ.
In this case I don't think Chad's brain made the most logical and practical decision. It was entertaining to watch though.
Chad I have been watching you a few weeks now. I really enjoy your show. Your oven is a good idea but I do not think you should use plywood. It will combust at 230 - 302 degrees. Concrete board would be best. hardiBacker I think.
Also denshield board is fireproof.
Maybe steel plate running length or 2 thirds the length above the flames to catch and hold the heat.. it will help hold heat and distribute the heat more evenly.. the problem with these gas grills is hot spots ..always to hot on a small.area the plate will radiate the heat evenly 1/4 maybe but 1/2 inch for sure..problem is plate is $$$$ maybe have a scrap of anything thick.. that's free...lol. the steel from an old tractor bucket would work great
Fire bricks as well are used which makes me think a pan full of sand would do the same as the steel
Nice job on swapping the barbecue into an oven but you will definitely need to put something over the top of were the flames are to disperse the heat or the oven will burn whatever is in the middle. Keep up the great work the both of you 👍
Chad if you add a plate of iron or steel above the burners that's the right size, it would distribute the heat all around the oven negating a need for a fan. I love this kind of enginuity. Go for it!
also check out the episodes of TANKED of ATM (AcrillicTankManufacturers) to see how they bend their Acrillic for their fishtanks they even uses wooden bucks with fabric on the ply to protect the plastics.
Hopefully the distortion is not bad where the plastic is bent. “Objects in your windshield may appear closer then they look”
I can’t wait for this it’s going to be a great project chads going to blow everyone’s minds with this idea he has
I HATE TO TELL HIM BUT ITS NOT GONNA WORK
It’s way nice to have your own oven , usually people never wanna help when you go and ask if they can do it for you! Like that sayn if you don’t do it yourself it doesn’t get done right my brother!!!
Your cleverness never ceases to amaze me
Have you thought of using led strip lights behind the plexiglass in the tail lights? The led’s are cheap and easy to obtain and very bright, you can easily cut them to any length you require and they usually have a tape backing so you can stick them in place, if you’re worried about water you can get waterproof ones or you can hit them with a coat of clear to seal them too.
make a good smoker when your finished making windows with it, a few racks, a hole fora temp gauge, a hinged lid or sliding windows? some nice alder wood fire smoke in the pit light it with the gas.. hale yes man you can cook up a few sides in that one, or smoke up a some shoulders and ribs while you're working away, maybe a whole brisket? see them on sale a lot and they make mean tacos and stews, sammiches too.. why not?
Thank you for your channel and showing folks what really goes into a custom. When people haven’t done this they have no clue.
This oven is a multi purpose tool. You can make the plexi glass, use it for powder coating then when you have finished do your burgers 🤣🤣🤣
I would have made it a bit bigger for powder coating things but I am sure Chad could rebuild if needed.
Can't wait to see the finished job
Chad !!! A diffuser plate ( HO HOLES ) across the burners and raised about an inch to distribute the heat. Holes would create hot spots.
I love how you actually show us what you are doing and don't edit to much. You said Jolene is the editor. Well she does a good job.
Good idea with the bbq maybe use drywall and foil for the oven walls? Cheaper and fireproof
got to cover the burners... then cut a hole in the back of the pit for an exhaust chimney for the combustion gasses.
Yes, and all gas grills will have intake holes below the burners to support combustion. Without proper ventilation a covered barbecue could possibly end up full of propane gas creating a bomb
I agree with the last comment! Make some heat shelds going the length of the oven to disperse the heat length ways .
Hey Chad, just a suggestion
Add a fan to circulate the internal hot air.
Have a small fan on a rod, the rod goes through a hole on the side of the oven box
Attach a drill or a small motor at the other end of the rod, then fan to circulate the air.
Use metal instead of plywood so you can achieve temp. Faster.
I believe if Chad was a carpenter he'd grows his own forest for lumber and make his own nails !
Make a heat deflector. You can do that by making a long tray with tubes under it. If you don’t , you will wind up with a hotspot even with the fans. Put one fan in the front on one end and one in the back on the other end you may get decent circulation.
The BBQ was probably off in measurement because the manufacturer eyeballed it lol. I am pretty sure you will need some sort of cover directly over the burners so all the heat disperses out to the ends better, along with the fans it should heat evenly.
HE CAN BUILD ANYTHING ON THE FLY...LOVE IT BRILLIANT NEVER MISS IT ...
He might walk on water one day..lol. he has a gift probably can't spell I can't
Great idea. Make your own large oven.
How about a large sheet metal V shape a foot deep to the back, centered over the burners. Heat rises up and over to the outside edges. Bracket the poly-glass form to the top of it. You will not get direct heat from the burners and disperse to the outside where the bends are the greatest. Just a thought. IDEA***
EVERYONE needs a friend like this who knows how to THINK and makle shit HAPPEN . It seems to be a dying breed. Thank Fuck for people like this guy.
Great video. I would definitely do a practice run before using a lot of Plexiglas. Maybe clean up the piece of Plexiglas you had in Elvis and use half with Vesque or clear plastic and the other half left bare or no Vesque or plastic. Good luck
Great job of using what you have! The fans might be a bit of an over complication, just a sheet of metal over the flames would act as the hot plate to move the heat all around the box.
The phrase"You gotta go big or go home!" reminds of these two!! :) Cheers!!
Could get that foil lined insulation board. The stuff they make duct work out of. You could use instead of ply wood maybe.
watched now had migraine yesterday .the builds heating up now .cooker is coming along can see it already .i am not sure about the wood yet but always faith there .thanks as always guys spot on
Running some small "test" sample windows might be a good idea to get the temperature and technique dialed in...
Great idea to come up with to make your own oven to heat the plexiglass. As far as debating on whether to apply the wrap first. I would do a test run on a small piece to see how it turns out before the actual windshield. Jolene was trying to get the good shots in on the oven build.
Put a sheet metal cover about 3” above burners
Chat oven looks great,for your side panels how it fits in have no where to scew it from top just weld some flat tags to hold in place ,and get the heat up inside interslat it ,if that's a great idea just a great job your doing chat 🇦🇺
You should use at least three temp gages (one middle, one on each end, and test run it for temp consistency before you do the windshield). The edges are probably going to be hard to get to temp with the burners in the middle. Without roasting the middle.
Nice! Now were talking! I love these kinda crazy old school unheard of golden ideas.. .. round of burgers well done please!!! hold the plexi...
Make sure you clean it up so none of that ash floats up and lands and embeds itself into the windshield. I think the fans should be on the top sucking the air and heat up. I agree you should have the the heat shields to disperse the heat.
Keep up the good work you do some amazing things
When done use it for powercoat oven
Also I think you should have a hinged door in front to make for easy removal of your glass shield.
You have to be receptive to new ideas ... A brain is like a parachute ... it only works when it is open! Good luck wit the windshield Chaddy !!
Hi Chad and Jolene great video again I love to see your video's thanks 😉 When you are done with the window you can use it to grill a pig still 😉 I wish you a nice evening and weekend and stay safe greetings and a hand to Chad and a kiss to Jolene from the Netherlands Chiel
plywood walls and top and ends covered with the reflective rolled insulatve aluminum on inside to keep heat in and likely more fire resistant.
Thanks for your positive can do attitude sir. Once a fella puts his brain to it, anything is possible
Dude - You gotta replicate that BBQ. I say line the walls with metal and then insulate with wood and/or something flame retardant. Metal then cement board then insulation for the top? If heat rises maybe thermostat on front? G'ver Chad!
Great job in building on the fly. Looking forward to "Fun Day Sunday" to see what direction this build is going to take.
Great idea. Putting a plate over the burners will disperse the heat more evenly as well. Fans are a great idea. Tail lights are looking awesome 👍👍
May need a couple drain holes/vents in the tail light box so it doesn’t fog up or get rusty. LED lights will keep the temperature down.
Very interesting looking forward to see how it works
I love the oven idea! We cook whole hogs in ovens just like this. I believe it will definitely work.
Chads always teaching!!!
Interesting idea!
Do you think you should try your idea on a small piece before cutting a big piece? That way you can fine tune what to do on scrap piece instead of wasting material
Awesome idea, it looks like it should work
Excellent idea, I can use that 👍
i would put a window out of an kitchen oven door in to it.......just so you could have a look without loosing your heat
Absolutely brilliant, wouldn't it be better to use sheet metal rather than ply, so the sheet metal holds the heat in more.
Whatever you use sure it will work a treat
I don’t think it will be too hard to reach 250°.
I always end up watching the end, hours later. Some of them go on longer then I can give. But I always come back...
Chad any consideration for putting a deflector over your three burners so that you dont have a hotspot directly over flames
Awesome work Chad n Jolene love watching your videos
Instead of plywood (which could burn) you might use light gauge metal like tin can. Great Work Straightforward!
Line the inside of the plywood with aluminium foil.
Now thats pretty darn creative...to think I almost threw away one of our old grills...hmmm...Chad you inspired me to create something new from it...gotta love this channel. You guys are such an awesome team...thanks Chad and Jolene
I really don’t understand how this windshield thing is going to work but I will find out soon enough thanks too bad Chad and his queen Jolene 💃🏻💃🏻. I will drink a virtual beer with you🍻🍻😜😉🤗🥇🥇
If I’m going to buy a new one, of course I could cut the old one. Worse case was when she came home and I was cleaning car parts in her dishwasher. I had to wash dishes by hand until I bought her a new one. Not quite on the same page. I’ve got a new wife now.
I think the wrap first might be affected by the heat. Might want to form the window cool it then wrap it.
I would definitely try a small piece before putting a big piece of plexiglass on there.
Watching with enthusiasm and hope this works. Great idea.
Repurposing is fun! Very creative
The thermal degradation and ignition point of wood and plywood may be generalized by the following: 230° to 302° F (110° C to 150° C): The wood will char over time with the formation of charcoal. If the heat is not dissipated there is some possibility of spontaneous combustion.
No matter how this plays out it’s still the best entertainment on TH-cam. Jolene’s dedication is top notch, as well as her skill with the videos and computer.
This is so awesome it feels like we are all family
Just an idea but the front center section of the windscreen might be very close to some of the later narrower cars. If you used one of those you would only have to make the curved corners from plastic
This is interesting 👍love watching
Sounds like a good idea, 👍 but I think it would be better to cover the plywood inside with sheet metal. 😉
Greetings from Switzerland
Metals reflect heat (what u want) , wood absorbs heat , burn problems.