Teardown
Skoolfrom $15/month
CutterUp Diesel Lab
CutterUp Diesel Lab is for Cummins engine enthusiasts. Learn engine building, machining and diagnostics.
Visit community on Skool →Teardown
How this community works
- Pricing
- $15 a monthAbove the hobbies & crafts median of $11.50.
- Size
- 101 membersBigger than 10% of the hobbies & crafts communities indexed here.
- Revenue ceiling
- $1,515 a monthIf every member paid the listed price. Free tiers, discounts and churn are not visible from outside.
- Format
- 3 paid tiers
- Platform
- Skool
- Category
- Hobbies & Crafts
- Last verified
- 28 October 2026
Steal this
- 3 paid tiers: one price for access, another for proximity. Worth copying once you know which members want more of you.
Is this your community?
Claim this listing to correct the details and show a verified badge.
About CutterUp Diesel Lab
CutterUp Diesel Lab is for Cummins engine enthusiasts. Learn engine building, machining and diagnostics.
Why you should join: Rebuilding and machining tips, torque specs, troubleshooting help, performance and fabrication projects and exclusive PDFs and calculators for the 5.9L and 6.7L Cummins B Series. From $15 a month.
Tiers and products
Notes
Teardown notes
The one-liner
A Skool shop for Cummins diesel engine builders, machinists and performance tinkerers.
What they actually sell
CutterUp Diesel Lab, run by Robert Winkworth, lives on Skool. Its public pitch: "Learn Cummins engine building, machining, troubleshooting, and performance from real shop experience." The paid door is Standard at $15 a month. Premium and VIP tiers sit above that. Robert Winkworth shares engine rebuilding and machining tips, torque specs, troubleshooting help, performance discussions, shop and fabrication projects and alternative fuel experiments. Members get exclusive PDFs and calculators, and in-depth courses are promised soon. The page asks for serious, engaged members who want to build one of the best Cummins communities online. Inside sit 3 courses. A formal money-back promise is not spelled out on the about page.
Who pays and why
Owners and mechanics passionate about the 5.9L and 6.7L Cummins engines. They want real shop experience, not forum guesses, when they rebuild or tune. They pay for rebuilding and machining tips, specs, troubleshooting and downloadable calculators.
Where the members come from
The Skool lander and Robert Winkworth's own teaching appear to be the main acquisition path. Public social links are thin on the about page, so growth reads as community-led rather than a giant media brand. Exact follower counts stay off the about page.
What's holding it back
The courses are still coming, so for now the paid door rests mainly on forum help and downloads.
Steal this
Focus the whole community on one engine family, so every post is relevant to every member.
Would this work in another niche?
Yes for any cult machine, such as Land Rovers or vintage synths. Weak for general topics.
Written 28 October 2026
Reviews
5.0(1 review)
Addison Wood
“Really enjoying the community. Enjoy reading the questions, answers and the way everyone contributes to gain knowledge and understanding of the Cummins engines. Thank to everyone joining and showing the same interests in each and everyone’s project. Really appreciate you setting this up for all of us Rob. Thanks”
More hobbies & crafts teardowns
Teardown
Teardown
Teardown
Teardown
Teardown
TeardownIdea Finder
Could you build something like this?
Six questions and you get an opportunity report: the gap in this category, what comparable communities charge, and where to build it.