Ciao, solo per essere sicuro ho trovato molte risorse su come fare questa operazione in sicurezza, scrivo gli step qui sotto e mi magari dite la vostra.
In più anche una parte in inglese trovata in rete. Ho una scm minimax 26g.
1. Coltello divisore 2mm circa inferiore in altezza alla lama (dal manuale)
2. Controllo che se la guida parallela fosse troppo poco alta devo mettere un pannello attaccato alla guida
3. Si una lo spingilegno più un'altro per tenerlo sulla guida
4. Si taglia fino a prima della metà con tagli progrssivi in altezza
5. La tavola deve essere raddrizzata almeno su una faccia e due coste perchè poi si gira la tavola
6. Si finisce il taglio con sega a mano
7. la posizione dell'utente deve essere non sulla linea di taglio
8. Il carro è fermo, non si usa per questa operazione
Il mio dubbio è che nella parte finale hai comunque lo spingilegno della guida vicino alla lama..
Altro dubbio è che ho visto il buon stefano il falegname mettere la guida parallela arretrata e non su tutta la lunghezza del banco
Qui sotto la parte in inglese dove usano anche la featherboards che presumo sia un pezzetto di legno dalla parte opposta della guida parallela prima della lama.
Equipment:
tall fence: The big difference between a normal rip cut and resawing is when you're making a regular rip cut, the wide part of the board bears on the surface of the saw. If you're going to stand a board on edge and cut it, you want a similar surface for the board to bear against. A normal TS fence is maybe 4" tall; if you're trying to stabilize a 8" board, you want something taller.
featherboards: Use them at least to keep the bottom edge of the board tight to the fence. If you can manage a tall featherboard to keep the board flat against your tall fence, even better. Remember that featherboards should be set up before leading edge of the blade -- you want to push the stock against the fence, not against the blade. Featherboards also add some kickback protection, which is important when making a non-through cut and you don't have the benefit of anti-kickback pawls. (A riving knife is great if your saw has one, but not every saw does.)
push stick: Excellent for exerting control over the stock while keeping your fingers well away from the blade.
zero clearance insert: If you're resawing, you're likely creating thin stock that could slip into the gap in a regular throat insert. A zero clearance insert will avoid that.
infeed and outfeed: Featherboards and a fence control the lateral motion of the stock. If you're working with long boards, you'll also want help controlling vertical motion. An outfeed table or rollers keep things safe by eliminating the need for you to reach over or behind the blade. Something on the infeed side, even just a single roller, lets you comfortably manage the board from a fixed position at the saw instead of trying to feed the first part of the board from several feet back.
clean, sharp blade: Heat is always a concern when ripping, but even more so when half the blade is spinning in an enclosed space. If your blade is dull and/or covered in pitch, it's going to run a lot hotter than a good clean and sharp blade. A blade lubricant made for saw blades helps too. A rip blade is the right tool for the job here.
Technique:
straight, flat stock: Don't try to resaw a board that curves in any direction; work only with straight, flat boards that are well dried.
work in steps: If you try to make a 3 1/2" cut down the length of a board, you're probably going to run into trouble. Typical home shop saws will bog down trying to make such a deep cut in hardwood. Even if you have a saw with plenty of power, you run the risk of generating a lot of heat, possibly scorching the wood. Instead, take smaller bites, raising the blade after each pass; you'll be able to feed the stock faster, which means things stay cooler.
cut from both sides: Even if you're resawing stock that's narrower than the capacity of your saw, cut partway in from each side rather than trying to cut all the way from one side. This reduces the risk of pinching the blade as internal stresses in the wood are released. Just remember to always keep the same face of the board against the fence so that both cuts are the same distance from that face.
don't cut through: If you leave a little wood (maybe 1/4"-1/2") in the middle rather than completing the cut, you'll be able to manage both halves of the board together through the entire operation. It's easy to finish the cut with a handsaw, and you're going to clean up the cut sides of each board with a planer (or a plane) anyway.
stay out of the line of fire: Standard TS operation advice, but always worth repeating: don't stand in the way of a potential kickback.
The main idea, as with any TS operation, is that you want to keep everything well controlled and keep your body parts out of harm's way.
