Is this actually a vid on "what not to do?" because I've seen multiple vids saying that you need one bead line across the bondo. Also the mixing like you're mixing a pot puts air bubbles into the bondo. You should use a figure eight mixing method.
Because they can be reused. They are plastic and most of the dried Bondo will peel off. And depending on what you’re using it for, you may not need a spreader. Any flexible, but not flimsy will work.
I add a line of hardner the width of the blob of bondo. Seems to work but not much working time for the mix i use. The bondo I have came with blue hardner. So much for matching to a pink or tan spreader with the light blue color after mixing.
Keep in mind you don't have a lot of time to apply it. Mix it thoroughly then apply it immediately. It will be hard to spread and it won't spread smoothly when it starts to harden. @@b3arwithm3
Light pink, and it sets up in a few minutes. You barely have time to spread it smoothly. Definitely recommend the bondo spreaders. For $2, you can not go wrong. The hardener to bondo supply I disagree with. A one gallon can has a small tube of hardener. Buy a second tube. It takes more than you think to get a light shade of pink. Does anyone use bondo on their gutters at the seems?
I found the density of the Bondo filler and it is 1.14. grams per ml. The density of the hardener is 1.2 grams per ml. I got these from the 3M safety data sheets. So one fluid oz of filler is 29.57 ml and that is 33.71 grams. If you use 1.5% ratio then the hardener amount is .5 grams or .6 ml hardener. If you use the 2.5% ratio then you use .84 grams of hardener of about 1 ml. So this large can of 3.18 kg has a bottle of 78 grams of hardener. 3.18 kg is 3.625 litres and 78 grams of hardener is 93.6 ml . The volume ratio for the whole can is 93.6/3625 = 2.58 . So the % in the tube is 2.58. Many places say to use less 1.5 %. So this gives a ball park range in ml. and now you know how much ml is a 3 inch strip. To calculate that from the can directions. A 3 inch circle 1/2 inch thick is 115.82 ml or about 4 fluid oz. 115.82 ml filler is 132. grams and 2.58% of that is 3.406 grams of hardener. 3.4 grams of hardener is 3.4 /1.2 = 2.83 ml. The can could have just told you this. 2.83 ml hardener for the 3 inch circle that is 1/2 inch thick. So that is the starting point and you could use less hardener and find out how long the working time is, down to 1% or so. I have a lot of these little pneumatic push tubes that I can fill and measure exactly. Get them for ink cartridge refiling etc. I am going to try a 1% mixture and see how many minutes work time and completely harden time I get. Some places say you use more hardener in cold weather and that the filler get hard due to heat produced in the mix.
Just grabbed some BONDO for a quick project, only used it a couple times with some decent results. I didn’t know this about the spatula color though. I’m sure it’s pretty common knowledge for someone who works with it often…but good to know for a beginner!
Just done a repair with similar. Cardboard is messy and absorbs.... I used a smooth old kitchen tile, dead easy to mix and clean for reuse. I also use flat candy sticks for small amounts, throw em away after use.
I don't really like using cardboard but was all I had at the time. I use bondo a lot for filling dimples in hollow metal door frames. I'm a carpenter for my fulltime job. As for bondoing cars I might use a different product.
I always mix it on a piece of aluminum flashing, it's nonabsorbent. If you have none, any lumber yard sells step flashing precut to 5 x 7 or 6x 8 for cheap.
Can't remember who to give the credit to, but a trick i was taught was to use those wooden stur sticks and mixing batches in a small paper or plastic cup... at least with my old hands - easier for me! Fast clean up too!
Idk, I’ve mixed a ton of it on cardboard. Cheap and easily disposable. Bondo sticks to metal and a lot of the time it hardens before you get it all scraped off of whatever you mixed it on.
Mixing on cardboard isnt any good dies contamnate your filler u mix it the wrong way putting air into it and to much hardner for that amount of filler😮😂
What is the ratio. No where can I find the amount of hardener to add. On the can they say to mix use a 3 inch circle 1/2 inch thick and add a three inch strip of hardener. This volume is 115.86 ml. My hardener did not come out as a strip and is liquid so I need to know the amount in ml. I mixed 1 once of bondo up with some hardener and it was too much and I wasted half of the mix. It would really be nice if they told you somewhere how much in ml so you don't have to guess and use up the tube and have to go and buy another tube. This is disgusting. If you knew the amount of hardener to put in , exactly you could put it in a pneumatic tube and squeeze out the exact amount. Then you would not run out of hardener and have to go to the store to buy another tube. It is absurd that they can't tell you the amounts in ml. They say it is 1.5 to 2.5 % by weight. This means I have to get out a scale and figure out the density so I can arrive at a volume measurement. I will have to do this myself and post the answer. It is for 3m Bondo 265C 3.18 kg and 78 grams of hardener. This gives you the mass ratio but not the volume.
Explain. (I'm here because, despite being a rather seasoned DIYer, I hate using bondo because I don't like the time pressure. I prefer slower things.) What did he get wrong? This was the first result on Google, so let us know what's off. Thanks.
@@hughwoatmeigh6999make smaller batches and spread it out thin it out when you are done mixing it. Add a little fiberglass resin (before adding hardener) if you want a thinner consistency and more working time. First pass just press it into the surface and don’t worry about the thickness if it. You’re just trying to get full contact with the surface. Following passes try to build the thickness. If you can’t do that and shape it at the same time then just focus on getting enough material on the surface. You can sand to the shape you’re looking for as long as you have enough on there to work with.
@@Kains_whored it’s fiberglass resin. The polyester resin used alongside fiberglass mat or cloth that makes it a hard object. It’s right by the bondo at Home Depot. If that doesn’t help then i don’t know Google it.
Jesus H you did everything wrong. Cardboard sucks out moisture, and mixing it in circular motion creates air pockets which result in pinholes. Maayb don't make instructional videos of things you don't understand
Thanks man. I've been using this stuff for fifty years and have just gone by experience. Not all of it good. Ah, I have an old can of Gold Premium Body Filler which says on the label to use Red body filler hardener. I also have a new can or Bondo wood filler. Thought I'd try that since I'm repairing wood, not auto body. Its hardener is blue. I have some old spreaders like Brian is using. Haven't seen any blue spreaders. Back to trial and error, I guess.
Thank you for being concise and to the point!
You're welcome!
Awesome, thanks for the video. Getting ready to do a speaker enclosure out of MDF and I've never used body filler before.
it's easy, but it gets hard quickly. be prepared.
Great Tips! Just what I was looking for! Thank You, Sir!
Is this actually a vid on "what not to do?" because I've seen multiple vids saying that you need one bead line across the bondo. Also the mixing like you're mixing a pot puts air bubbles into the bondo. You should use a figure eight mixing method.
just got back from the store...why didn't they tell me I needed the spreader? For that matter, why isn't it included with the can?
Because they can be reused. They are plastic and most of the dried Bondo will peel off. And depending on what you’re using it for, you may not need a spreader. Any flexible, but not flimsy will work.
I add a line of hardner the width of the blob of bondo. Seems to work but not much working time for the mix i use. The bondo I have came with blue hardner. So much for matching to a pink or tan spreader with the light blue color after mixing.
Yeah, pretty much after this video they changed the color. Who knew.
Do you need to use the whole can at once? If not, how long can we keep it if we haven't mixed in the hardener?
only mix what your need. I have a can in my truck thats over a year old. Just make sure to close the lid tight.
@@Doityourselfwithjoe thanks. That sounds much better than wood putty which dries after opening
Keep in mind you don't have a lot of time to apply it. Mix it thoroughly then apply it immediately. It will be hard to spread and it won't spread smoothly when it starts to harden. @@b3arwithm3
no! just seal it up well.
It keeps indefinitely if you mix the hardener in right away after you buy it.
Light pink, and it sets up in a few minutes. You barely have time to spread it smoothly. Definitely recommend the bondo spreaders. For $2, you can not go wrong. The hardener to bondo supply I disagree with. A one gallon can has a small tube of hardener. Buy a second tube. It takes more than you think to get a light shade of pink.
Does anyone use bondo on their gutters at the seems?
I would prefer 1 part hardener to to X parts Bondo to try in 10 mins, 1 part hardener to Y parts Bondo to dry in 20 mins. etc.
I found the density of the Bondo filler and it is 1.14. grams per ml. The density of the hardener is 1.2 grams per ml. I got these from the 3M safety data sheets.
So one fluid oz of filler is 29.57 ml and that is 33.71 grams. If you use 1.5% ratio then the hardener amount is .5 grams or .6 ml hardener. If you use the 2.5% ratio then you use .84 grams of hardener of about 1 ml.
So this large can of 3.18 kg has a bottle of 78 grams of hardener. 3.18 kg is 3.625 litres and 78 grams of hardener is 93.6 ml .
The volume ratio for the whole can is 93.6/3625 = 2.58 . So the % in the tube is 2.58. Many places say to use less 1.5 %.
So this gives a ball park range in ml. and now you know how much ml is a 3 inch strip. To calculate that from the can directions. A 3 inch circle 1/2 inch thick is 115.82 ml or about 4 fluid oz. 115.82 ml filler is 132. grams and 2.58% of that is 3.406 grams of hardener. 3.4 grams of hardener is 3.4 /1.2 = 2.83 ml.
The can could have just told you this. 2.83 ml hardener for the 3 inch circle that is 1/2 inch thick. So that is the starting point and you could use less hardener and find out how long the working time is, down to 1% or so. I have a lot of these little pneumatic push tubes that I can fill and measure exactly. Get them for ink cartridge refiling etc.
I am going to try a 1% mixture and see how many minutes work time and completely harden time I get. Some places say you use more hardener in cold weather and that the filler get hard due to heat produced in the mix.
Just grabbed some BONDO for a quick project, only used it a couple times with some decent results. I didn’t know this about the spatula color though. I’m sure it’s pretty common knowledge for someone who works with it often…but good to know for a beginner!
Just done a repair with similar. Cardboard is messy and absorbs.... I used a smooth old kitchen tile, dead easy to mix and clean for reuse. I also use flat candy sticks for small amounts, throw em away after use.
I don't really like using cardboard but was all I had at the time. I use bondo a lot for filling dimples in hollow metal door frames. I'm a carpenter for my fulltime job. As for bondoing cars I might use a different product.
I always mix it on a piece of aluminum flashing, it's nonabsorbent. If you have none, any lumber yard sells step flashing precut to 5 x 7 or 6x 8 for cheap.
Can't remember who to give the credit to, but a trick i was taught was to use those wooden stur sticks and mixing batches in a small paper or plastic cup... at least with my old hands - easier for me! Fast clean up too!
You mentioned four or five times that the bondo will set up “very quickly”. But you NEVER told us what that means. How quick is that?
its blue now
Just as most of these videos to HELP are being made, they change the color, after decades. SMH.
I can't get the lid off
It’s been two weeks. Did you get the lid off?
my bondo didn't have a spreader. someone stole it. that's what happens when you live in south florida. thanks for the video.
That's anywhere.
Spreaders are sold separately. They in different sizes and can be reused.
Yes but one thing cardboard a no. No. Due to taken absorbed into cardboard
Idk, I’ve mixed a ton of it on cardboard. Cheap and easily disposable. Bondo sticks to metal and a lot of the time it hardens before you get it all scraped off of whatever you mixed it on.
Good luck with all you air in that
This isnt for a car. This is for filling hollow metal door frames. The frames will be painted with latex paint for metal.
its smells really bad do i need a mask ?
As with all chemicals you probably should. Not sure what it says on the can. I never really paid attention to it other than I like the smell of it.
I mixed and mixed but it stayed blue
He's using original Bondo. Bondo puts out several products. His hardener is red. Some mixtures use a blue hardener.
good video
Ty
My Bondo always comes with blue hardener and the spatulas are yellow or like in this video 😂
unfortunately they changed the color of the bondo, however I think the spreaders are blue now as well
@@Doityourselfwithjoe I've yet to see blue ones out in the wild. Might have to order them special
@@sr212787 You may be correct. The ones i saw someone using, said they ordered them.
Mixing on cardboard isnt any good dies contamnate your filler u mix it the wrong way putting air into it and to much hardner for that amount of filler😮😂
Every body laughed at my car and called it a Bondo buggy
I had one of those back in the 80's. Not long after this video, they stopped making the peach colored hardener and now its blue.
What is the ratio. No where can I find the amount of hardener to add. On the can they say to mix use a 3 inch circle 1/2 inch thick and add a three inch strip of hardener. This volume is 115.86 ml. My hardener did not come out as a strip and is liquid so I need to know the amount in ml. I mixed 1 once of bondo up with some hardener and it was too much and I wasted half of the mix. It would really be nice if they told you somewhere how much in ml so you don't have to guess and use up the tube and have to go and buy another tube. This is disgusting. If you knew the amount of hardener to put in , exactly you could put it in a pneumatic tube and squeeze out the exact amount. Then you would not run out of hardener and have to go to the store to buy another tube. It is absurd that they can't tell you the amounts in ml. They say it is 1.5 to 2.5 % by weight. This means I have to get out a scale and figure out the density so I can arrive at a volume measurement.
I will have to do this myself and post the answer. It is for 3m Bondo 265C 3.18 kg and 78 grams of hardener. This gives you the mass ratio but not the volume.
1:50 or 2% hardner
This guy must have been trying to raise extra money. Cause this video one of the most misleading ones I’ve watched.
Explain. (I'm here because, despite being a rather seasoned DIYer, I hate using bondo because I don't like the time pressure. I prefer slower things.) What did he get wrong? This was the first result on Google, so let us know what's off. Thanks.
@@hughwoatmeigh6999make smaller batches and spread it out thin it out when you are done mixing it. Add a little fiberglass resin (before adding hardener) if you want a thinner consistency and more working time.
First pass just press it into the surface and don’t worry about the thickness if it. You’re just trying to get full contact with the surface. Following passes try to build the thickness. If you can’t do that and shape it at the same time then just focus on getting enough material on the surface. You can sand to the shape you’re looking for as long as you have enough on there to work with.
@@TadpoleTrainerwhat is fiberglass resin
@@TadpoleTrainerThank you for your knowledge good sir!
@@Kains_whored it’s fiberglass resin. The polyester resin used alongside fiberglass mat or cloth that makes it a hard object. It’s right by the bondo at Home Depot. If that doesn’t help then i don’t know Google it.
I just got stupider... thanks for killing points of my IQ
All kinds of f’ed up going on here…NEVER use cardboard. 🤦🏻♂️🤦🏻♂️🤦🏻♂️
Total fail! 😮
Jesus H you did everything wrong. Cardboard sucks out moisture, and mixing it in circular motion creates air pockets which result in pinholes. Maayb don't make instructional videos of things you don't understand
Exactly! I totally agree. Now go make your video and show him how it's done you bad ass!
I have wondered so many times why people insist on mixing it in cardboard if the paper soaks up moisture. Where is your video, I’m watch!
Mixing it wrong your gonna create pin holes
Thanks man. I've been using this stuff for fifty years and have just gone by experience. Not all of it good. Ah, I have an old can of Gold Premium Body Filler which says on the label to use Red body filler hardener. I also have a new can or Bondo wood filler. Thought I'd try that since I'm repairing wood, not auto body. Its hardener is blue. I have some old spreaders like Brian is using. Haven't seen any blue spreaders. Back to trial and error, I guess.