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Description
The Erdnase Project- Video DownloadIntroducing The Erdnase Project Marcos Waldemar A Monographic Study on the Erdnase Change The Erdnase Change is one of the most iconic, studied, and debated techniques in card magic. It was first published in English in 1897 by August Roterberg in New Era Card Tricks, under the name "Excelsior Change", attributed to Adrian Plate. Years later, it would be popularized by S. W. Erdnase in the classic The Expert at the Card Table. Since then, it has been
Introducing The Erdnase Project - Marcos WaldemarA Monographic Study on the Erdnase Change
The Erdnase Change is one of the most iconic, studied, and debated techniques in card magic.
It was first published in English in 1897 by August Roterberg in New Era Card Tricks, under the name "Excelsior Change", attributed to Adrian Plate.
Years later, it would be popularized by S. W. Erdnase in the classic The Expert at the Card Table.
Since then, it has been reinterpreted by generations of magicians... When executed well, it may be the most powerful and practical color change there is.
When executed poorly... it's an abomination.
15 Years of Obsession
For over 15 years, Marcos Waldemar has lived with a deck of cards in his hands, obsessed with this technique.
This is not just an explanation.
It is the result of years of study, trial, error, and refinement.
Today, for the first time, he shares:
His secrets
His personal variations
And the invisible subtleties that turn a move into a real illusion
What You'll Find Inside
A complete journey through the Erdnase Change, from its foundations to advanced applications:
1. M.W. Erdnase
Foundations of the original technique and Marcos' personal approach
Technical details, structure, and control
2. Multiple Erdnase Change
3. Covert Erdnase Change
4. Middle Erdnase Change
5. Step Erdnase Change
6. No Deck Erdnase Change
7. Waldemar's Favourite Sequence
8. Bonus Trick
Take your Color Changes to the next level.
Download now!
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4.1 ★★★★★
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Product Reviews
★★★★★ 5
Great for aggressive chewers
Style: Gorilla, Size: Small (Pack of 1)
My little Corgi is an aggressive chewer. She has destroyed quite a few toys that were advertised for chewers. When I received this toy I had little confidence but it has lasted unscathed. Aside from being sturdy it also bounces so we play ball with it. It is one of her favorite toys.
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Reviewed in the United States on February 8, 2026
★★★★★ 4
Strong and Great for Treats, but Heavier Than Expected
Style: Gorilla, Size: Small (Pack of 1), Style: Gorilla, Size: Small (Pack of 1)
This is a very durable and well-made chew toy with good overall quality.
The material is thick rubber and holds up well to chewing. It also works very well for holding treats, which stay in place securely.
The main drawback is the weight. My dog is about 30 pounds, and even though this is a smaller version, it is still fairly heavy. She tends to use it mainly to get the treats out and then loses interest afterward.
What I like:
Very durable material
Works great for holding treats
Good bounce and quality construction
Cute design
Things to be aware of:
Heavier than expected
Some treats may be difficult to insert
Dogs may lose interest once treats are gone
Overall:
This is a solid treat-based toy that is built well, but the weight may limit how much some dogs interact with it beyond treat use.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Extremely tough!
Style: Gorilla, Size: Large (Pack of 1)
These are seriously so much better (and cheaper) than any other supposedly "strong/durable" type toy like this. We have 70lb very strong chewers and they chew through everything. Can not have stuffies. They do eventually chew through but it seriously takes awhile. Especially in comparison to other brands. I will say it says "recommended for dogs under 35lbs" but I also work for houses where I recommended these for their dogs which were smaller and they wouldn't chew on because too tough. But they also accidentally bought the large which is what I buy my big dogs. So the large is GREAT for big dogs. If you have a dog under 35lbs I'd get the size small. Also .... says you can stuff treats. You really can't. Which my dogs don't need. They just love to chew on. I call it their bubble gum because when they FINALLY get a chunk off(which again takes awhile.... as in over a week) they will fling the pieces into the air and chew on like a piece of bubble gum lol... they love it! I don't notice a difference in breath or anything but I don't use the toothpaste either. I just bought to see if tough and they are!! And again price is clearly so much better. I hate spending $20+ on a toy they destroy in a day.
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Reviewed in the United States on December 30, 2023
★★★★★ 3
Beware if your dog likes to chew
Style: Gorilla, Size: Large (Pack of 1)
It’s super cute and my dog loved it, but it didn’t last very long. My dog started peeling off pieces of it and eating it within three hours of play.
If you have a dog that takes it easy on the toys I would recommend this one. Otherwise I recommend passing because there’s no way it’s safe for them to be swallowing these pieces.
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Reviewed in the United States on March 26, 2026
★★★★★ 5
Lasted pretty long for my aggressive chewer
Style: Gorilla, Size: Large (Pack of 1)
Right away I was excited with this product because of the smell, texture and thickness. Smells minty fresh which does help with breath smell. The texture is great, had smooth areas and rigid areas all while being soft and durable. The product is pretty thick, which I needed for my Pit-Bull. She doesn’t chew much but, when she decides to she is 110% in and dedicated to destroying that item. She chews through most things in less than a day. This product however lasted years before I started to notice damage. It is one of her favorite toys. She liked it so much I bought two, one for the house and one for the car for road trips. It’s the perfect toy to keep a chewer distracted inside a car, along side a deer antler, which also helps with dental hygiene. She gets dental hygiene compliments every trip to the Vet. We use multiple different things to help with her teeth and breathe but, I think this toy contributes the most to her healthy teeth. I call it a toy because she plays with it all the time. Definitely will keep buying long as they keep making it. This product is a must for all dogs, it’s almost perfect for my Pit-Bull
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Reviewed in the United States on February 24, 2021
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