11/18/2023 0 Comments Unistrut p2484Normal people should leave screws in place  “real woodworkers” can flatten/sand the surfaces and glue and clamp instead of screwing and end up with a good, strong joint. When fastening with glue and screws, the main purpose of the screws is to hold everything together while the glue dries, but they also provide a backup if the glue fails. To keep everything square, you want to have a factory end on the 72" front legs, one of the 60" back legs, the 10" top beam supports, and two of the 24" pieces for the rear kickers (I’ll post a revised cut-list to show this grouping,probably graphically) The only measurement that’s needed is when you are squaring the frame, and that can be done with a piece of string (just use something that doesn’t stretch) Instead everything is positions by using other boards that have been cut as spacers. This process deliberately avoids specifying measurements. I intend to use wood for media support but in ways that allow for its instability.Īssembly instructions for the Maslow frame. This may not be a problem for many users however for me maintaining accuracy is extremely important. The rest of the frame structure will stabilize the upright support unistruts as well.Ĭhain interference with the horizontal rails will not be an issue considering the 12’ top beam will be 2’ out and 2’ up from the 4’x 8’ work area.Īnother issue: Using wood for the structure is relatively inexpensive but by its nature swells and shrinks with changes in humidity. The intention is to remove even the slightest flex in the position of the top beam as the stresses of the sled pull it at multiple angles. The 2 short bolts holding the horizontal rails make them absolutely rigid tied to the upright support unistruts. That is why I’ve used the carriage bolt & washer arrangement. The idea is to allow smooth movement of the top beam on the horizontal rail sections. Once tightened the teeth cut into the beam, and by design they lock into place when installed. However my experience with captured nuts is that they do not slide easily. If the beam is fixed to the end of the arms, and the arms move for adjustment, you don’t have that problem. One problem with your approach is that when you aren’t all the way out at the end of the horizontal arms, they are in the way of the chains. This assembly makes chain spacing relatively painless.įlip that unistrut over so it’s attached to the top beam via a short nut and bolt, then use standard captured nuts in the (near) horizontal unistrut to hold it against the angle bracket. The washer had to be trimmed to fit inside the unistrut channel and the hole squared to hold the carriage bolt from turning. The top beam is attached using a carriage bolt, modified square washer and adjustable handle - in this case a Kipp 06601-5A51 but many will work. The short piece is oriented with the channel up to allow adjustment for chain alignment in & out. Here is another solution using a unistrut construction:Ī unistrut P2484 angle support is used to keep the short piece of unistrut rigid.
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