The MC4X v2 is here for you.
It is a hot wire CNC cutting machine (a heated wire moves and silently separates the material along its path).
It brings together what more than 20 years of experience, 250 machines produced and 3 programs written have taught me:
Making hot wire cutting accessible to everyone, without needless headaches
Hobby CNC combines the pleasure of creating with the pleasure of using modern technology. A computer-driven machine makes accurate, easily repeatable cuts.
But for that, the machine, the electronics and the software must all work perfectly, be matched to each other, and suit what the user needs: that is the key to a truly usable whole. Otherwise the adventure can turn into an ordeal, ending with a machine in the cupboard (then in the skip) and a frustrated user.
My machines have always been built on these criteria, and avoid the problems of plans published by authors with no experience. Today I give you access to the new generation of my machine + software combination, which makes it easy to carry out complete projects (stored in a single file 😯).
Practical advice on hot wire CNC
For example 60 cm wide, which allows cuts at large angles. For long wings, you cut segments that join up perfectly. Wide tables limit the angles of the wire.
Except on small machines, 24 V is not enough to power the wire: it limits the speed and the type of material (EPP). I go up to 48 V with a dedicated heating module (and stop there, for safety).
Handsome carriages machined from solid metal often work badly, because their speed is limited by inertia, friction, and sometimes an unsuitable drive.
When the MC4X was sold as a kit, one request kept coming back: custom dimensions. You would have liked a shorter machine, a longer one, a taller one, with adjustable spacing…
Unfortunately, that request was impossible to meet: my stock held parts cut to the exact dimensions of a single model.
Another problem: depending on the supply of motors or boards, you sometimes had to wait up to 3 months before shipping.
So for this v2, I decided to do things differently.
For you:
For me:
How it works:
That way you become 100 % self-sufficient, and the day a part fails, you do not have to wait a month for a manufacturer to help you out, because the manufacturer is you!
Every part, its quantity, its exact specifications, and the various links and ways to order it.
The sizing criteria, the detailed plans and the files you need to build your machine to your own dimensions.
Step by step: every part, every cable, every knack, every setting, up to the first cut.
A place to ask your questions and share your successes and projects with the other builders. I drop in at least once a week to unblock any situation that needs it.
The software that lets you design your projects from A to Z and drive your machine live, with a license that enables cutting.
Once you have grasped the logic, your own projects are yours to make! (About 2 hours to prepare your first model, the EPProof, from the plan to the cutting files.)
A guide I only make if 15 founders join within 30 days
I may have long been convinced of the tremendous potential of hot wire CNC cutting, but for this offer you are the only judge.
So before working flat out to make this complete, detailed text + video guide for you (which is a huge amount of work: I have done it before, so I know), I offer you a preferential founder price, on pre-sale.
If I get 15 founders within 30 days, it means my offer meets a real need, and I get to work twice as hard. You will find the details of the provisional schedule below.
The first MC4X was born the same way: a pre-sale on my own website, which I called "self-crowdfunding".
More than 140 MC4X kits followed, in France and abroad.
The v2 keeps its standards, adds an amazing piece of software, and changes the way it is distributed.
The campaign starts on Sunday 15 November 2026
(This schedule is provisional but realistic. If a date ever slips, I will warn you by e-mail and explain why.)
All three include the detailed guide, a HotWire4X license, the Quick Start course, and access to the help group
You build on your own
€399on pre-sale, then €489
Can be paid in 2 instalments.
Recommended if you have never wired a machine, if you are a club, or a professional
I guide you remotely
€890on pre-sale, then €990
Can be paid in 2 instalments.
I come to you
from €3,490
Dates to be agreed according to my availability and yours: click below to contact me
Write to me at this address, with your town, your availability and what you have already done:
Can be paid in 2 instalments.
Smash it, and unlock the bonuses below 😀
0 founders out of 15 0 % of the goal
Next goalThe MC4X v2
I update this page by hand as orders come in, so yours may take a little while to show. Right now, 15 more founders are needed to reach the next goal.
15 founders — in progress
0 / 15 founders
The MC4X v2 is confirmed: the detailed bill of materials, the step-by-step build guide in text + video, the builders' help group, the video calls
25 founders — to unlock
The complete build file for the Grain de Ri, a parkflyer aerobatic plane with full-flying wing and tricycle gear, with hot wire cuts in HotWire4X and STL files for the 3D-printed parts (and plans of the plywood parts for those without a 3D printer).
35 founders — to unlock
A bonus module in the MC4X v2 online space, on making fuselages in tapered segments in HotWire4X and on the hot wire cutter.
50 founders — to unlock
Let's go wild! I poll the founders and add a feature of their choice to HotWire4X, in a dedicated tab (shown through the software settings, and within the limits of what is possible).
Each goal reached unlocks its bonus for all founders; the bonuses are made once the MC4X v2 build guide is fully online.
Know a modeller who dreams of a hot wire CNC? Send them this page, or talk about it at the club this weekend: every founder brings the threshold closer, for them as for you.
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From €300 to €550, depending on the dimensions you choose, what you already have in your drawers, and where you live. You pay the sellers directly, following the bill of materials.
Because it avoids all the problems of dimensions, restocking and waiting times. Because it has become possible (in 2016 it was not: I had my own electronic boards made). And because the MC4X v2 is meant for builders all over the world. Off-the-shelf parts can be found online, wherever you are.
A modeller's and DIYer's tools: small screwdrivers, Allen keys, drill-driver, side cutters, wire strippers, sandpaper, craft knife, lighter, small soldering iron, open-ended spanners, hacksaw, small file. I have kept soldering to the strict minimum, but you will need it to extend the motor cables and fit the heating wire connectors. If you do not have a soldering iron, the guide points you to a suitable one costing less than €25, and I show you how to use it.
Knowing how to use a computer, and the tools in the question above (so being a bit handy). No need to be an electronics engineer or a programmer: I am neither, I learned on the job. The guide details any technical steps, including how to solder. And any questions left can be asked in the private group for a quick answer (on video if needed).
If you can follow a diagram (red wire on +, black wire on -), that is enough to get there.
Download it now: it is free to install and to test thoroughly. You can design your first model while you wait for your machine. The license that enables cutting is included in all three plans: do not buy it twice.
If the threshold of 15 is not reached by 15 December 2026, everyone is refunded, without having to ask. Before 15 December, before the threshold of 15 is reached and before the bill of materials is sent, you have 14 days to ask for a refund. Once the bill of materials has been sent, as it is a digital product with immediate access, you can no longer ask for a refund.
As with any cutting: air extraction, mask, goggles, and never touch the wire. The heating stays at 48 V maximum.
The guide: all written documents in French and in English, all videos in French without subtitles or in French with English subtitles (as is already the case for the HotWire4X Quick Start course). Video calls and on-site support: in French or in English.
Online by card, through Stripe, a secure, world-renowned payment processor. The payment form opens when you click the order buttons further up the page. Payment in two instalments is available on the order forms.
It is my new business structure (me, Renaud Iltis): I am no longer a sole trader.
My name is Renaud Iltis. Mechanical design engineer, former teacher, and self-employed for more than 12 years. I have been doing hot wire CNC cutting since 2002, and I have sold more than 250 machines as kits, including more than 140 MC4X, each with its detailed guide. That is where I learned to explain without leaving anything out, to beginners and experts alike.
Not sure which plan to choose? Wondering whether the MC4X v2 will cut what you have in mind, or whether you will manage the wiring?
Write to me: we set up a short call and talk it through.
Tell me in two lines what you want to cut and what you already have (tools, machine, experience), and I will reply with two or three time slots: