I’ve really been wanting a JDS Multi-Router since I used one while taking a class with David Marks (at William Ng’s school in Anaheim). We used the JDS to make loose M&T joints for our coffee table project and it works REALLY nicely. However, the price tag for a home shop is WAY outside my spending limits (starts at $2,600). So, I’ve made the decision to try and build my own version. I’ve looked all over the web and found a few examples of other brave adventures who’ve headed down this same path. I’ve picked up a few pointers and tips from those attempts and I am ready to start my own design.
1) Operate in essentially the same manner as the JDS (I like how it works and no need to change it)
2) Precision is key so I’m building to pretty fine tolerances.
3) Keep the price under $500 (not including the router)
4) at least 4” of range in Z dimension (height of work piece)
5) at least 6” of range in Y dimension (length of mortise or slot)
6) at least 4” of range in X dimension (depth of mortise)
1) For a Multi-Router, precision = linear bearings + very good stops
2) No Flex – the unit must be solid enough to take the weight of work pieces without flexing or warping.
1) THK FBW/FBW2560R Linear Bearing Guide Slide Rail 4-Pack (ebay, $88) – support table in X & Y dimensions
2) SBR20uu 20mm Router Linear Ball Bearing Blocks (ebay, $38) – Router mounting plate Z dimension
3) 20mm Diameter Steel Round Bar/Rod Solid Shaft 13” x2 (ebay, $60) – Linear bearing rods for Z dimension
Given these starter parts, it’s time to get to detailed design. My intention is to keep this blog updated as I make headway. I will certainly post any design materials once there ready and look for feedback.
-- Jim, Now in Nashville, TN