Like a hot knife through butter

[type7]

I mark a line, build up tape on each side leaving a space the width of a zona saw. Pull the saw only and let it cut slowly. Not difficult at all might take maybe an hour or so.

[CC Clarke]

This is the model shown by the OP: Amazon.com: phrozen Sonic Saber Cutter - The Ultrasonic Cutter, Refine Your Prints with Ultrasonic Cutter : Industrial & Scientific

[Albacore 569]

Seems a waste of money. Unless you have a broken wrist or something? Can you kill flies with it? LOL.

[Albacore 569]

Useful simple technique here cutting PVC pipe straight & true. No need for a ultra sonic knife handed down to you by space aliens, (like pyramids must have been ancient aliens helping our puny primate brains) Just use your head. Remember?

[Das Boot]

Vertical cut is a heck of a lot different than the horizontal for a long space, such as the Bronco XXIII.

[Subculture]

I think Bob used this one- https://www.amazon.co.uk/Ultrasonic-.../dp/B07GPJVHSK

[RCSubGuy]

I think Bob used this one- https://www.amazon.co.uk/Ultrasonic-.../dp/B07GPJVHSK

Looks like the same one that I got, but I got mine from Micromark at the recent IPMS show. I think they had a show special at $300.

[Subculture]

That's quite an investment for a tool that may only have one purpose.

Might be worthwhile if you're planning on doing a bunch of cuts, but for the average modeller who might make one or two boats, I would be inclined to just use a razor saw, perhaps with a bit of soap which will help reduce friction, and just take it slow.

[He Who Shall Not Be Named]

That's quite an investment for a tool that may only have one purpose.

Might be worthwhile if you're planning on doing a bunch of cuts, but for the average modeller who might make one or two boats, I would be inclined to just use a razor saw, perhaps with a bit of soap which will help reduce friction, and just take it slow.

I'm with Andy here. No one does more cutting, hacking and slashing than me -- and I would not spring for this whiz-bang-nuclear powered-death wielding-industrial strength-lightsaber. A stupid investment. Just too many means already at hand to separate one piece from another.

You guys just concentrate on getting the basic tools and techniques down. Sweat the exotic stuff if... and when... you develop an actual need for it!

David
Grounded, and damn proud of it!

[Albacore 569]

Thanks Subculture. I like the idea f a bit of soap to reduce friction and potentially a smoother cut further still. Couldn't hurt.

[RCSubGuy]

Mock the knife all you want. I use it (nearly) daily. A useful tool.

Yes, you can make do with other tools, but it's like milling a slot by hand versus using a milling machine. Both processes work. One is easier, but more expensive.

[Subculture]

Not mocking it, you're doing this gig for a living, so time is money. Most are just hobbyists, and they have so much to spend on that hobby and admittedly some are more flush than others.

[Das Boot]

Mock the knife all you want. I use it (nearly) daily. A useful tool.

Yes, you can make do with other tools, but it's like milling a slot by hand versus using a milling machine. Both processes work. One is easier, but more expensive.

Waiting for the video.

[RCSubGuy]

Been up for a month in my weekly update videos.

https://youtu.be/FhtX3qmHm4M?si=mSuZ6fgOCNKd7P1s&t=2103

[Das Boot]

Been up for a month in my weekly update videos.

https://youtu.be/FhtX3qmHm4M?si=mSuZ6fgOCNKd7P1s&t=2103

I guess I missed that part, Mr. Perfect.