I took your advice and 30 years (off and on) of doing body work I've NEVER enjoyed working the mud! But now, I wanted to create extra dents to fix 😂... I'm so freaking glad I learned this before death comes knocking 😅

Yes, a great idea! Been doing it myself for over 20 years. One other use for the fiberglass guys, (I have been building fiberglass parts for decades) I always hated gelcoat as it is brittle and cracks. (and not cheap) I mix 1 part fiberglass resin with 2 parts regular Bondo brand (like you) to make a "thin-ish" brush on coating. (33% resin) I even use the fiberglass hardener, instead of the Bondo hardener. It sands easier, no pinholes, and is flexible so it doesn't crack like gelcoat. Plus, it's great at hiding the fiberglass matt/cloth texture. I also use it to bond on automotive parts, great adhesion and quick finishing.

Here’s a tip. I’ve been doing this for years as-well sometimes when it dries it may stay a little bit tacky and gum up your sand paper so I used wax and grease remover on a shop towel i give it a quick wipe and let it evaporate it removes all the stickiness and sands perfectly!!! 👌🏼💯

I,m 68yrs. old! Spread my 1st dent in my dad,s body shop when I was 12yrs. old and seen plenty before that one while emptying the barrels,etc. There was a product called "Bondo- Honey" he bought and the guys used it just for that reason. This was in 1968 folks. Lacquer primer and nitro-stan (red putty)! No mig welders, you brazed a new qtr. panel on the vehicle! Excellent video just the same! Jeff Dusti Shirley, Ma.

Correct, I am a fiberglass boat builder, bondo is a polyester body filler so you use polyester resin to thin it, the common resin for fiberglass work. I figured this out on my own when I opened a can of Bondo and it had dried out, it works and holds up over time. What you end up with is something like a glazing body filler. Styrene is a thinner for body filler and resin. It's a game changer especially good for beginners.

I'm not an auto body guy, but I do use Bondo for woodworking projects that will be painted. This is a great tip that I will definitely use, thanks!

I've worked with Bondo many times over the years, and I NEVER knew this. Outstanding tip. Thanks so much!

As a auto body tec and auto body painter, I can tell you we used this same technique with the fiberglass resin to make the bondo flow better with eliminating pin holes. Really works! We did it in the 1990s in our shop!

Straight forward instructions, just great. Other KZfaqrs should learn from this guy

I paint 2-4 cars a year for side work. This will make a world of difference for me. Thanks for taking the time to share

You know. This is actually genius. I was asking the guy at the paint store what makes the expensive bondo so much smoother and easier to spread than the cheaper stuff and he said. “Idk I guess they just use more resin” and I dint really know what he meant but this must be it. I tried this today and it works perfect. My first batch I made slightly to thin but after that I got it spot on. So much easier to work. Appreciate this. You gained a sub.

Rondo!! Sprayway customs (another channel) has been using that forever, but I will say, he’s never really explained how much to mix. Great video man! Thanks!

Man it appears lots of people have been doing this same thing for years , so what rock was I under dammit!! Thanks it only took me 50 years to find out Lmao 🤣

I appreciate your tip. I’m actually a woodworker that uses Bondo to fill voids on surfaces that will later be painted. Your tip will save me a lot of sanding. Yep, Bondo works fine on wood - if, and only if, you’ll be painting the project.

I'm a car. Penter, I've been using bondo for 30 years.This will Save me a lot of time and extra codes.Thank you

Great job. I so enjoy your videos. They’re so well done and I have picked up so much watching your videos. I’ve been a mechanic for over 50 years but I’ve never done bodywork and you’ve been a huge help. Thank you. 👍🏻

I had a guy that worked for me doing body work on deisel fleet equipment. He always mixed his mud in a little room off of the paint shop and never let anyone see the process. I’ve seen what he was applying and it looked exactly like this. So now I know the secret. Thanks for sharing this.

Excellent video. Thank you. I have a 30 year old Buick I'm gonna work on soon and this just made my life so much easier. Awesome.

You're absolutely right I've been doing this since 1983 and it works amazingly!

I've been in search of a product like this for years and just so happened to come across your vid today. Better late than never. Thanks so much for sharing!

The video was very informative, very well explained and extremely detailed. I will definitely talk to my body repair man before he touches my vehicle to make sure that he gets this mixture done as part of my repair contract.

Been doing that for years. Works great. If you heat up your bondo that thins it too. Just use less hardener

- Haha... I don't even do ANY autobody repairs and I can see that this added resin application works AMAZING!

Yo😮 I wish I knew this trick a few years back. I had to fill holes in steel door frames 6 per door x 24 door frames. Because it was in an underground garage and it would be cold at times as this was a new build, the bondo would cure to fast or wouldn’t dry the way I would like it. I’ve done some body work before, not a pro by any means, and I’m a very handy guy but I would always fight with it even when it came to sanding. The fact that you made number 2 look like smooth glass is amazing!!! Game changer! I will always keep this information with me. Thank you brother 🤘🏻

Wow! Been playing a bit over the years (40 yrs) with bondo and never saw this trick. It makes so much sense. I don’t hardly ever try body work, but when I have, yes this has been an issue. Next time, I will try your resin trick. Thanks again!

What an excellent trick and tip, I am always grateful for gaining knowledge from someone else's knowledge that is proven to work. Thank you for the great tips.

Crazy! I’m grateful to have stumbled upon this video . I enjoy doing body work and working with bondo. I also thoroughly enjoy working with fiberglass and resin but Im self taught and for that I rather good at it but with this trick I believe will take my skill to a whole new level with out a doubt. At the moment I’m working on refurbishing a boat I picked up for basically free . Has need a lot of resin work and I’ve already done a decent amount on the hull and plenty more to come. Awesome I came across this old school trick ! Thanks for the video and thanks everyone for the comments they have also taught me a things of two as well! I appreciate it guys !

I caught a custom builder show couple years ago, and he mentioned that bondo and fiberglass resin worked very well together, I was wondering why. Thanks for the explanation.

Big Tip for us DIY folks. TY!

Thanks, I'll use this to soften the last bit in the large cans 👍.

I tried this forever ago, and it worked to make it smoother, but it sanded 10 times harder. Good video keep up the good work.

Great tip. I thought I heard it all. Who knew. I’m such a beginner. Thanks.

That is a great result. When I have used body filler, it has done my head in with the rough rinish and air pockets. Great upload young man!

I already knew that stuff duh..... LoL 😂😂😂 awesome video. I was taught that years ago when you would get down to the bottom of the can it would be impossible to blend it so we would mix that in it presto..... Mo Bondo lol.... It's really just cause we didn't take the time to mix it in the first place lol but it works!!! Thanks 😊😊😊😊

And all us "gals" too, Robert! I'm gonna try this on my rusted '05 Prius rocker panels!

Thanks Robert. I always enjoy your videos and learn something too.

Super helpful. I'm no pro at all, so every tip is appreciated!

Nice tip. I’m going to use that. I know it’ll make the job easier. Thank you.

plus 10 ---- what a great tip. Best KZfaq tip I've read in some time. Thank You

This is a top ten tips on YT, i am doing a boat project with a boat from 1959 and a Sea-doo from 2005, very much fiberglass work on this!

I think “sprayway custom” uses same/similar applications…real cool stuff bro! That would have saved a lot of aggravation way back when…👍

Great video. I've been doing that for a few years now. It works really nice that way

This is just what I needed, thank you.

Wow, I've never heard that before. Awesome video as always 👍

Glad to have you back Robert 😎 Happy holidays happy new year

Thanks for the video. Going to be doing some body work soon and this is going to help. I don't understand why people have a need to put down any useful information instead of positive information. Even the downside of thinning is more useful than just saving 'stupid'. Anyways thanks for taking the time to help others, i know what's involved with putting together a video.

Great tip! I will definitely try this the next time I use Bondo.

Glad I come across this video! Many thanks!

I did it last summer accidently and created a perfect back fender rocker panel which I think is now water proof and rust proof. The back of my rocker panel is made of bondo only. Any metal that was in this area was removed after I formed a bondo made panel over the old area. Works like a charm so far. I plan to use bondo mixed with resin to create molds for making auto body parts in the future. Great combos.

Been there done that and it is a game changer and zero problems. As you stated horizontal vs vertical surfaces need different ratios.

Awesome tip!...That is definitely a game changer. Thanks for sharing!

Best tip video I've seen in a long time. I only started using the stuff last year for patching up things around the house, not on a car yet, but I've been struggling with the thickness of it. No matter how careful I was, it always needs tons of sanding to get smooth and then there are still air bubbles or dips. I am SOOOO gonna try this! EDIT: Wow I just saw the part 2 for this video, everyone must watch it too!

Thanks for the tip! Wish I'd have known this years ago!

Dang i wish I had heard this trick 40 years ago..Thanks! Great video!

Yeah man. You've taught me something important today. Thanks!

Man? I love ideas like these! Thank you for sharing knowledge!

Great tip , thank you!😊

Great idea,thanks for the tip!!!

been looking for that Idea for a couple of years now, thanks pal.

Good video, very helpful tip! Thanks

Thanks for the video. They also make Bondo thinner that is similar. I use evercoat plastic Honey resin. It is made for thinning filler and works great.

You should mix body filler on a non porus surface, cardboard absorb the resin making it thicker

A great hack....can solve a lot of headaches. Thanks.

Great video,very Helpful Thankyou

Thank you so much for sharing that with us!

Great tip, thanks for sharing

Hey Robert. Another useful video. When I get to the stage where I do body finishing, I will definitely use this method. Air bubbles are the worst. Thanks for sharing.👍👍🍁

A Few Years Back , I WATCHED One Of The Custom Car Builders POUR OUT His One Gallon Of Bondo Onto The Car He was Building ; I Have Been LOOKING For THE ANSWER ALL THESE YEARS ! NOW I KNOW HOW HE DID IT !! THANK YOU FOR THIS !!

Great tip! I've heard of people adding resin to kitty hair filler (Bad Chad for one), but not to regular bondo. Glad I have subscribed, learned something from both videos you have had since I subscribed. Thanks!!

RONDO!!...This is an old trick my father taught me from the 70s

Thanks for sharing this. I'm not a professional just a hobby Mechanic. I've been battling Bondo for many years. I only wish I'd known this sooner. Would have saved a lot of sanding and headaches.

After filling and before it hardens you can place wax paper over it to future smooth it out. Once it sets up, the wax paper will easily peel off.

Thank you for the helpful tip

Thank you Goomba, for this. You have saved Me so much agida on doing my own small repairs on my 2005 Saturn Vue. Salute'🍷

Looks just like a 2 part spot putty that Ive used. Thanks

I have done this and I have also mixed bondo with 2 part clear epoxy resin, with and without the bondo hardener. Both seem to work pretty good. It's good for repairing rotten wood, etc.

That’s called RONDO, and some guy with a lot simpler description had posted this formula years ago. Also this formula does work great in colder temperatures.

Great tip! Thanks for sharing it!

This is why i live this channel. On a nother note. Seeing how you are so great at answering questions. I just bought a 1960 2 door sedan Bel Air. It is a factory 348 car. When I opened the trunk i found a date code correct Tri Power intake with no carbs. The car has the factory motor still in it but i am not able to read the engine pad by the heads. How can i tell if this was a factory Tri Power car. Also this car has been parked in a private junk yard for 50 plus years. The owner of the yard passed some years ago and the family knows nothing about the car. I am wanting to sell it and do not want to get taken on the price if this is truly a rare car. Thanks Adam. Keep up the great content I learn something every time you make a video. Also I have decided to replace the roof on the 63 Belair that you helped me with by answering my last question.

We did this in the early '70s working in dealership body shops. I see the cream hardener has come a long way, from pink to blue. And they added Spanish words to the front of the can. They're pretty good with that Bondo, I don't think they need any instructions. They know what the word Bondo means world wide. In TJ they don't pull dents, they fill them with newspaper and cover them with chicken wire and on goes the Bondo.

Wow thanks for this video. Going to try this out in this Summer. ✌️

OK thanks for the tip.Next time I used body filter I'll try it out. Gess you always learn something new all the time. THANKS 👍.

Awesome tip! And a small amount strongly thinned for self leveling? Genius!

Great video thanks! I have both bondo and resin and hated how thick and lumpy the bondo was when I used it.

I started doing this back in the early 80s. Every now and then I pick up my Hutchens Hustler and thank God I don't have to use it anymore!

I will definitely be using this on my 1948 Ford F47 truck project.

I used to do this It definitely helps make the filler creamy and lays down smooth, but it becomes a lot harder to sand with the higher amount of resin added

In my old shop there was an aqua can from Evercoat called Honey we would add to Z Grip body filler and it worked great.

Awesome tip!! Thanks

Awesome my man thanks I’m gonna try it

Yer you can see that resin on top when you open a new tin..great idea..👌

Thank you for the tip that is awesome i have been using rage ultralight the price is triple the price i am definitely going to try this thanks again.

Very good trick, thanks for the tip, good day.

You learn something new ,that’s awesome method,thank you ,will try it

I don't use body filler all that often, but the last time I opened the can, it was very thick, and when I mixed it, lots of bubbles. I would have suspected that you added acetone. Next time I'lm going to add some resin, what a difference. Thanks - Jim

Man. I'm so glad this video came up in my YT feed. I've been using bondo for over 30 years and could never figure out how the pro restorers got it on cars so smoothly and evenly. I was convinced they had some special high-end formula withheld from the general public. This is a real gem. I appreciate you sharing it. Merry Christmas! (New subscriber ;) )

Been doing this since my first airbrush days in 1980. I learned from the best. RIP Kent Ford Imperiale...

Thank you , will use it , sounds good and looks really good, cheers mate 👍🇭🇲

wow... i got some old bondo im tryin it thanks alot man

This looks identical to upol dolphin glaze. Brilliant bit of gear, and now I don’t have to buy it! How have I not heard of this before, I’ll never know 😂