mistermikev Posted July 4, 2020 Report Share Posted July 4, 2020 so... I recently happened into a fEarful 15/15/6/6. VERY nice cab. I want to make it into two 15/6 /1 cabs. so went to my fav local lumber spot and snagged some "figured" 3/4" baltic birch plywood 'clear coated'. so... now... I have no panel saw, no circular saw, no table saw... but I do have a router and I want to make perfectly parallel cuts. so... was thinking of making a simple jig... similar to a circle cutting jig: just mount my router on a 1x8x32 piece of pine, and mount another piece of pine at 90 degrees on the opposite end. that piece will ride the edge of the panel. my one concern is tipping... as holding on to just the router might not be stable at 26" out. so... make a little handle at the 'T' side of things? One hand on router (mounted to pine) and one hand at the edge? just looking for input as usual... in case anyone has a better solution to this scenario, or ideas to improve it. all general comments, questions, concerns appreciated. I am only going to be doing 1/8" rabbet cuts till I get down to depth where I can cut it with a jigsaw then go back with the router and follow the edge for a clean cut. Quote Link to comment Share on other sites More sharing options...
Bizman62 Posted July 5, 2020 Report Share Posted July 5, 2020 I'd like to comment as usual but can't fully understand what you mean. Pictures? 1 Quote Link to comment Share on other sites More sharing options...
ADFinlayson Posted July 5, 2020 Report Share Posted July 5, 2020 parallel cuts with the router... got a track fence? my ryobi has a track with quite a long reach, I expect it will be wide enough for a cab. If that's no good, make your self one of those marker stick things with a long stick, a stopper and a nail in one end to score your perfectly parallel line, then put a fence along the score to around against. 1 Quote Link to comment Share on other sites More sharing options...
ScottR Posted July 5, 2020 Report Share Posted July 5, 2020 And clamp or stick the piece to a scrap piece of plywood and just route all the way through into the scrap. SR 1 Quote Link to comment Share on other sites More sharing options...
mistermikev Posted July 6, 2020 Author Report Share Posted July 6, 2020 On 7/5/2020 at 2:41 AM, Bizman62 said: I'd like to comment as usual but can't fully understand what you mean. Pictures? thank you for the reply/support! I'm not a paint wizard like you! after thinking this idea over, and watching some other woodworking videos for doing rabbets... my idea has evolved to just a wide board with router mounted at one end, and a strip of 3/4 x 3/4 on the bottom side of the piece at the other. the 3/4 will ride the edge of the 5x5 panel and place my router at 26.5 or 24.5 or 16.5 depending on the cut. not sure that makes it any clearer. On 7/5/2020 at 8:41 AM, ADFinlayson said: parallel cuts with the router... got a track fence? my ryobi has a track with quite a long reach, I expect it will be wide enough for a cab. If that's no good, make your self one of those marker stick things with a long stick, a stopper and a nail in one end to score your perfectly parallel line, then put a fence along the score to around against. appreciate the input. well, the reach needs to be 26.5 at widest... which is quite wide. most of the store bought rabbet guides max out around 12" afa I know... but if your ryobi goes to 26.5 I would be interested to see it. the problem with a marker stick... or just drawing a line and putting a fence on it... it's unlikely to be perfectly parallel as you place the fence. the cab construction I'm doing is going to require very precise parallel sides. the sides will be exactly 3/8 larger on each edge of the baffle, for instance, so they slot into a rabbet cut into all 4 panels. If this isn't perfectly square it's going to cause assembly problems. with a table saw or panel saw this would be trivial... just need the sm parallel precision with a router. actually was thinking a lot about getting a router panel saw setup... but just do not have the room. EDIT: I should say that's a "Dado Joint" for the baffle... as rabbet is only at edge. 18 hours ago, ScottR said: And clamp or stick the piece to a scrap piece of plywood and just route all the way through into the scrap. SR thank you for the thought - that could certainly work, but planning to place the 5x5 on the garage floor and don't have a 5x5 of scrap, and given I will be kneeling on it... don't want to risk flexing. Quote Link to comment Share on other sites More sharing options...
Bizman62 Posted July 6, 2020 Report Share Posted July 6, 2020 57 minutes ago, mistermikev said: not sure that makes it any clearer. Nope I can't even figure out what you're going to do with the cab, other than cutting it into half! FWIW I finally googled for fEarful 15/15/6/6 so I now know it's not about furniture. For some reason I was thinking about a pharmacist chest drawers with 6+6 bigger and 15+15 smaller drawers! 1 Quote Link to comment Share on other sites More sharing options...
mistermikev Posted July 6, 2020 Author Report Share Posted July 6, 2020 26 minutes ago, Bizman62 said: Nope I can't even figure out what you're going to do with the cab, other than cutting it into half! FWIW I finally googled for fEarful 15/15/6/6 so I now know it's not about furniture. For some reason I was thinking about a pharmacist chest drawers with 6+6 bigger and 15+15 smaller drawers! hehe, I'm not using the cabinet from the old one... I'm building two new cabs from 5x5 sheets of baltic birch plywood. Just going to make a jig for the router - very similar to a circle cutting jig, but with a perpendicular strip of 3/4 x 3/4 at the edge. will allow me to cut a channel 26.5" away but parallel to the edge of the 5x5 sheet. then I'll ride that strip in the channel I just created, and create another channel 16.5" away from that channel... etc. basically allow me to cut up a 5x5 sheet of plywood into the 'squares' I need to build the speaker boxes. Anywho, I'll shut up now. 1 Quote Link to comment Share on other sites More sharing options...
mistermikev Posted July 7, 2020 Author Report Share Posted July 7, 2020 so... here's my cut sheet... and here's my prospective jig so was thinking I might do slots for the attach points of the rail (pictured in dif relavent positions) so I could slide it and then bolt it down. the center "eye" is going to be a knob/handle of some sort... with my other hand going on the knob of the router. I figured I needed to do shallow passes anyway to prevent damage to the finished side of the 5x5 sheet... this should give me enough leverage to maintain control and a tight coupling to the edge of the sheet for the first channel... doh... just saw my first mistake... router bit needs to be 3/4 so it create a 3/4 channel so my spacing is off by 1/4" right now. the plan being to make the first cut vertical from the r side of the sheet to cut the back/baffle/shelf, then ride the 3/4" piece in the 1/2" depth 3/4" width slot and make the 16.25" channel... then repeat, then ride the north factory edge to make a channel 26.5" from the edge, then ride the channel to make a 24.5" channel. then use a jig saw to bust out the pieces and follow again with a pattern bit. anywho, thanks @Bizman62 for encouraging me to not be lazy and do a drawing! 2 Quote Link to comment Share on other sites More sharing options...
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