[member=10397]Hans[/member]
I have used both your TSO Guide Rail Square (GRS) and the Festool LR32 system to quickly make very accurate MFT-type tops, using the following procedure:
1. Using my TS55 I insure a straight edge along the long edge of a piece of 3/4" MDF.
2. Using the TS55 and the GRS I create a square corner at one end of the long edge of the MDF.
3. Using the LR32, with the 16 mm stop "up and out", I align the LR32's holey rail so that the first hole will be 71 mm from the short edge and 80 mm from the long edge (16 mm, plus two additional 32 mm holes). I slide the GRS up to the MDF and clamp both ends of the holey rail in that position. Using my OF1400 router with a 20 mm cutter, with the MDF over a sheet of insulating foam on my MFT/3, I plunge 11 holes 96 mm apart. Alternatively, you can simply align the holey rail, without the 16 mm guide, so that the center of the first hole is 71 mm from the edge, as this saves a later straight cut.
4. Next, I move the holey rail to make the additional 6 holes from the short edge for each of the 11 holes that were already cut. To align the holey rail, I partially plunge the bit (with the router off, of course), and I insert it into the existing hole. With the router, thus aligned, I slide the holey rail so that the LR32 plate is in one of the holes. Then, I slide the GRS up to the long edge of the MDF, and lock the GRS in that position. I clamp the rail to the MDF, and I am now able to cut the 6 additional holes square to the edge using the GRS and LR32.
5. Without moving the GRS, I move the rail to the next hole along the long edge, confirming its position by using the partially plunged 20 mm cutter. I repeat the above process 10 times.
6. At this point I have a piece of MDF which has the required 77 holes, one line of which is already at the required 61 mm from the long edge. I next use the GRS, rail, and TS55 to cut the other three edges so that they are also 61 mm from the edges of the holes, resulting in the required 718 mm x 1102 mm MFT/3 top.
As I have been using the foregoing method for a while, as you can see in my posts at
Portable, Folding Workbench With MFT, Router Table, and Other Tops and
Folding MFT-style Bench with Router Table wherein I made a 7 x 12 hole MFT-type top, I was amused to see that TSO will be marketing a single-unit "parallel guide" that is used with the GRS in the identical manner that I used the existing holes (from the first line) as a parallel guide to space additional, parallel rows, each being spaced 96 mm from the prior row.
Sandy
