Reddit reviews Parts Express 1/4"-20 T-Nuts 50 Pcs.

T-nuts I used threaded inserts are first but it caused the MDF to bow out around where the threaded insert were, obviously bad for a level table.

you will need to cut recessed circled so the part with the prongs sit flush to the under side so they don't hit the frame.

T-tracks were too expensive for how many I wanted.

I use a separate sheet of MDF that I screwed into the original waste board so it's easy to replace and I don't have to mess with re-calibrating the frame every time.

Sure its actually really simple if you have access to some power tools.

1. Measure out your handle. I used the dimensions 2 in x 1.5 in x 7 in. If you can rip your 2x4 and have all sharp edges it is a plus. cause it makes it easier to cut imo
   
   
2. Measure out your center hole. I used a rectangle with the dimensions 1 in x 2 in
   It is 1/2 in from the side and 1 in from the top. Id use a scroll saw if you have it but a jigsaw will work. Start by drilling out a few holes in your soon to be center hole this will give you a place to start your saw without having to cut from the outside.
   Note: if using a jigsaw you should mark out your hole and cut from on both sides of the handle as a jigsaw may not cut as straight through as you'd like.
   
   
3. Drill a hole in the top. Use a drill press (recommended) or hand drill and drill down from the top of your handle you should go through the center hole you just made and about 3/4 in down into the other side of the handle. From the top of the tool to the bottom of the hole it should be about 3 3/4 inches in.
   
   
4. If you have a bolt already that long GREAT. But if not just cut it with a hack saw and file the ends to make it easier to put on nuts. I used a bolt with 1/4 in diameter.
   
5. for the next step you will need 4 1/4 in inner 1 in outer dia. washers and 2 1/4 in nuts. It goes bolt washer handle washer nut washer washer nut. Tighten the first nut until tight to the top. the other is what tightens your blade sticks down.
   Note: You can get a bit fancier and replace the second washer and first nut with one of these
   
   
6. lay out your blade sticks. Mine are 1 in x 1/4 in x 7 in. Make 2.
   Drill a hole for another bolt at one end of both sticks in the same place(right side of pic). On the other end drill a pilot hole for the 2 screws that will hold the blade in place( left side of pic. make sure its big enough that the screws can go in with very little effort mine were about an inch long. At just under an inch from the end cut a blade slot slightly past your pilots (without the screws in). Mark your inches on your sticks
   
   
7. on the other side insert smaller bolt washer 1st blade stick, a soft rubber o-ring, 2nd blade stick, washer, then nut.
   
   
8. you insert the sticks between the 3rd and 4th washer in the handle with the center bolt between the two blade sticks. tighten the last center nut to secure sticks
   
   
9. At this point with a blade inserted it should be functional but if it pleases you sand/cut down the handle to fit more comfortably in your hand i took 1/2 in from the 2 in width on both sides and sanded the piece smooth rounding out the sharp corners
   
   As i said i made this with stuff laying around so if you buy more specialized hardware you could definitely improve on my tool. It might also be beneficial to use a hardwood on you blade sticks. I haven't used mine much yet so it is possible they could split where the blade is mounted. if you know a way to put in the blade notch without cutting from the outside please share!!