MICROJIG GRR-RIPPER ZP9-B2S2 Zeroplay Miter Bar 2 Piece

These are really great. Definitely watch a video about the setup. They really help.I bought two packs of these because I needed to make a 36" crosscut sled. I already have a 24" with an 18" steel bar runner. I looked for a longer runner, but nobody seems to make them. So I bought these, a little skeptical, particularly about the third runner entering the miter slot okay. The first two will start in the slot, but by the time the cut is finished, the first runner will be out of the slot and the third will have to enter. After I got it all set up, they work perfectly. No slop at all, and the runners don't even catch the least bit as they go in and out of the slot.Since I used 15/16" MDF for my sled, I bought 1" knob screws from the hardware store along with fender washers. Then I countersunk 1" holes for the washers. It's much better than the screws and washers that come with the slides.I used three for the main sled, and the fourth one I used to make a zero clearance stationary sled for the right side of the blade.Like others have said, the slides are very well conceived and made. Some complain that they are expensive, but for the quality that these are, the price is just about right. We'll see how they hold up, but I think as long as don't abuse them, they should last a long time.

I could have made my sled guides myself (and I still need to try this on my next sled) but these were at a fair price and I like how they can be adjusted to make the jig extremely square, snug and make your cuts very accurate and repeatable. Assembly instructions are pretty good and easy to follow. Prepping the rails themselves was easy, but building the crosscut sled was a bit more challenging. I manually measured for the 4” on center holes and drilled the 1/4” thru hole and then the 1/2” recess for the mounting screws, but two of the holes were ever so slightly off center by less than a 1/32” and, the jig is so snug by design, that it doesn’t leave much room for error on drilling the holes. In hindsight, I’d probably clamp the rails to the sled and use an awl to mark the holes so they are more precise. Live and learn! Anyway, I was able to make the two offending holes a bit more oblong and I was in business! These rails are very nice quality and easy to assemble as part of your jig or sled. I’m sure I’ll buy more when the time comes, as well as learning how to make some of my own! It’s a great product!

I bought the pair of these guide bars intending to use both of them on a tablesaw crosscut jig. However, careful measurements on my saw showed that the its guide slots are not actually parallel. Thus, for solid and repeatable guiding, I can use only one slot. At this point, I haven't decided what to do about a full size crosscut jig.I then used these bars (one bar each) on two smaller jigs -- a small parts jig and a circle-cutting jig. Because these parts are molded, I was not surprised to find that the width of one of the bars varied a little -- it had an expanded section at one end, up to about 0.010 inch larger than the rest of the bar. A little attention with a 6 inch mill file fixed that. This issue may have caused trouble for some users.Once I fixed that, the bars worked very well. Because they make contact with the slot over the full length of the bar, they are very solid once they are adjusted and installed. I was concerned that the short 9 inch length would not provide adequate guiding support for the 16 inch square circle cutting jig, but I cannot imagine that it could work any better! It slides very smoothly, as well as providing firm guiding.The manufacturer is correct; the bars expand a little when tightened down, so you want to adjust them to just light contact with the slot before installation. If you are using only a single bar on a jig, there really is no reason to use the very large mounting holes that are suggested by the manufacturer, assuming that you can drill holes at accurate positions.

this is my second set. I build oversized, heavy furniture and I am constantly upgrading my table saw slide/sled. As an Engineer I am very OCD that my 90 deg angles... have to be 90 degrees.. not 88.. .not 92... but 90 +/- 0.5.I used to make my one bars our of hardwood but couldn't really get a nice fit. They would work fine the first few times but then wear out and there was a slightly little play to each side which I was fixing with tape to increase the width by mils. \these ZEROPLAY are amazing. follow the instructions. use a nickel and a thickness gauge and you don't have to worry. my sled is 4ft long x 2.5ft wide. and I used specialty extruded aluminum as the fence with a wooden backup at the saw cut line.Highly recommend these miters bars.22JUN17 UPDATEI STILL LOVE THESE... I NEED ZEROPLAY TO BUILD LONGER ONES THOUGH - JUST TO FIT MY NEEDS! :)

Setup in your mitre slot is extremely easy. You’ll be in business in 90 seconds. Building a sled is far more time consuming but not impossible if you take your time and have some basic woodworking skills. The included directions give you basic plans for a sled but using your imagination, the possibilities are endless.Having a drill press and the necessary forstner bits are almost a must for building a sled which I didn’t foresee when I purchased these. Just another reason to buy more tools to the wife’s dismay.For my sled, I used 3/4” cabinet plywood and glued on a 3mil PVC sheet which makes gliding on the table surface smooth as butter. I bought an extra handle for my GRR-Ripper and used that for extra control. I painted the finished product and plan on adding a plexiglass guard to protect against any possible kick backs.Overall, a great and well thought out product and definitely recommend.