2/3/2024 0 Comments Flycut machiningIf you need their contacgt info or whatever, email me. Maybe I should start selling these? I am guessing Thermwood does not necessarily recommend this but it works for us. When we heard "waste" board, we figured we could use waste boards. We buy this from Blue Linx (formerly Georgia Pacific). We pull the good ones, fly cut one side and just skim the other side to break the seal, and keep them for the router. Lots of times they are junk sheets and not able to be saved but because sometimes they are as if they were brand new, that must mean they make the stuff. Guess I am too cheap to buy my own but we take the better ones and flycut them and use them as waste boards. We use truckloads of 3/4" x 5x10 MDF for products we make and these sheets come as a protective cover from the maufacturer. I hate to admit this but we use 1/4" 5x10 sheets for wasteboards. If the whole unloading and/or cycling concept is not required, your technique can certainly be a good way to go. They will then resurface them all at a convenient time in the production schedule. Production does not have to be disrupted mid-way through. Many will also have a third or fourth in reserve so that they can introduce them in the middle of a job if the cut-through pattern get to dense and the hold-down efficiency drops. They would have at least two same-thickness wasteboards to do this - cycling between them. Most of our clients work with the "unattached" wasteboard as they are looking at unloading the cut parts off the table quickly, loading another sheet and getting the machining cutting while the operator labels and organizes the previously cut set of parts. (Although that 1/2" spoil board "discard" could possibly be used as the start of a wasteboard sheet. But your technique reduces the frequency of having to discard the un-machinable 1/2" or so below the tables aluminum edges - and then having to size-to-fit and resurface both sides of a new 1" sheet. Some people might figure on just starting off with a 1" thick sheet of MDF as the main and only spoil board. That would certainly reduce/eliminate the curl, etc. Great way to create a "re-laminat-able" spoil board. This seems to work well with a waste board (SPACER) that starts off with 3/8" material. Another side benefit is that curl that can develop in the waste board is minimized by the uniform machining of both sides towards the core of the sheet. Although this does not reduce the amount of re-surfacing, it can extend the continuous working cycle between re-surfacing operations. Some of our clients will run X number of sheets with one side of the waste board and then flip it over and run another Y number of sheets before re-machining both sides. The re-surfacing opens up the top surface and can help to reuvinate your vacuum efficiency.Īlternating the "Face-Up" of the Waste Board (SPACER). Manipulating waste boards (SPACERs) -sliding them on and off, flipping them over, etc - also can close off the porousness of the top surface. The main spoil board also acts as a filter for the fine particules/dust that is constantly being pulled into it - slowly clogging the top surface. This levels it out from thickness variations that can be caused by uneven thickness expansion due to humidity changes, etc. We recommend that the main spoil board be re-surfaced once a month at a minimum. Their depths of cut would become non-uniform. The efficiency of the hold down would decrease -and- 2. What these clients also found was that they would start to have the following issues: 1. Since the main spoil board does not get machined into on a "regular" basis by your normal production, some of our clients have gone months without "touching up" the top of it by re-sufacing and removing 0.010" (0.254 mm) or so. Periodic Re-Surfacing of the Main Spoil Board. The 3/8" material allows for a couple more "re-surfacings" before the curl effect makes them unusable. 1/4" becomes too flimsy too fast and begins to curl up at the corners. The surfacing of both sides opens up the fibers and allows a greater flow through the material.Įxperience has also lead us to suggesting to our clients that they start off with a SPACER (or waste board) with an initial thickness of 3/8" (9.5-10 mm). The surfaces on both sides of the sheet are somewhat "sealed" in the manufacturing process. Our experience here in Canada with our customers indicates that a new main spoil board should always be machined on BOTH sides.
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