MARVELUX® BULLET CASTING FLUX Reviews & Ratings
Reviews Summary
Customers praise MARVELUX® BULLET CASTING FLUX for its effectiveness and minimal smoke compared to other fluxes. Many have long-standing experience with the product, appreciating its ability to clean and improve the quality of molten lead. However, some users express concerns about moisture attraction and rust, suggesting careful handling is necessary.
What Reviewers Are Saying
Effectiveness
80%
Reviewers consistently highlight MARVELUX's effectiveness in cleaning lead and removing contaminants, often stating it's the best they've used. Many claimed it excels at producing smooth alloys without igniting or creating significant smoke, making it a favored choice among experienced casters.
Smoke and Odor
65%
A significant theme across reviews is the low smoke production and pleasant odor of MARVELUX compared to traditional fluxes like beeswax. Customers appreciate that it doesn't create a foul smell or heavy smoke during use, contributing to a better casting experience.
Longevity and Value
70%
Many users find that a small amount of MARVELUX goes a long way, emphasizing its value and longevity. The product's efficiency means it can last a long time, making it economical for those who cast in large quantities.
Hygroscopic Nature and Rust Concerns
35%
Some reviews indicate issues with MARVELUX's hygroscopic properties, leading to potential rust problems if not handled carefully. Customers express that moisture absorption can cause sticky residues, prompting caution in storage and usage.
User Experience and History
50%
Long-time users share their experience, with some having used the product for decades. Their insights reflect strong loyalty and satisfaction, while also considering the mixed opinions existing within the casting community regarding its handling and potential drawbacks.
Good stuff
First, it seems far better than the previous flux I got from another supplier. I had gotten a used cast iron pot that the previous owner fluxed with candle wax. There seem to be some sort of build of something other than lead. This flux not only cleans lead better than the other commercial/chemical flux sold at other shooting supply houses, but also did a lot to clean off the build up on the pot interior. It will be added to next order along with other reloading products.
Would you recommend this?
Yes, I would recommend to a friend
marvelux review
works well with much less smoke than the other flux that i have used
Would you recommend this?
Yes, I would recommend to a friend
Great flux
This is the only flux I use. Have used this for over 30 years with no issues. Easy to use and effective in removing the contaminants in the melted casting metal.
Would you recommend this?
Yes, I would recommend to a friend
Best Ive found!
I've been using Marvelux for years and never been disappointed. It is the best product I've found for cleaning lead for bullet casting. I don't agree with the statement that it can keep your lead pot rust free, I do have to clean my pot after every use. Still, I've not found anything that works better if over 50 years of casting and shooting lead bullets.
great stuff
I don't cast enough bullets to justify buying a bigger jar . Marvelux cleans and the pot and mix stays clean
gets the crud out now.
be forewarned this stuff goes a long way 1/2 teaspoon is all that's needed for a 20 pound pot. it will smoke if you use to much. but there is no foul smell. It turns gray and pulls the contamination out with ease.
Great product
Very good for fluxing bullet metal. No flames or smoke to deal with. Residue cleans off easily. Have used this for years with great results.
Best Flux I have found
I have been casting for almost 50 years and like most old casters I used to use beeswax for a flux for my salvaged range metal. If you have used salvaged bullets you know you get a little bit of everything along with the lead. Wax as a flux smokes and sometimes ignites, but it does work. However, once I tried a jar of Marvelux I have never used anything else. It is a coarse granular powder that stays on top of the lead. It doesn't take a lot of material to do the job and a one pound jar last a long time. Once stirred in it helps the metals blend and the impurities to bond together and rise to the top where they are easily skimmed off. It doesn't smoke and ignite and does a far better flux job than wax. The powder does tend to cake in the jar, but it is easily broken up with a spoon. I read one negative post about Marvelux causing rust and I honestly don't know what he is talking about, if anything it keeps my pot clean and free from buildup and certainly no rust. If you haven't tried this product then you are still doing things the hard way.
Great people, and top quality.
im melting recovered range lead. lots of oxides and nitrides. marvelux in any size is the only thing that really cleans things up. and unlike other products marvelux has almost no smoke and it for some reason inhibits rusting of steel and cast iron melting pots. the only down side is that if you leave the lid open it will draw moisture .but it floats on molten lead so theres no explosion. it still works just fine.
Great stuff!!
Great Stuff! Have used this product for years. No bad smells, smoking, and on.


