# š New Stock Frame Design š
**URL:** https://forums.maslowcnc.com/t/new-stock-frame-design/2025
**Category:** Hardware
**Created:** [January 22, 2018, 10:47pm UTC](https://forums.maslowcnc.com/t/new-stock-frame-design/2025 "2018-01-22T22:47:02Z")
**Posts on this page:** 20
**Page:** 2
### Author:  [@dlang](https://forums.maslowcnc.com/u/dlang)
#### Post date: [January 23, 2018, 12:48am UTC](https://forums.maslowcnc.com/t/new-stock-frame-design/2025/21 "2018-01-23T00:48:52Z")
> [@bar](#):
>
> Iām a little bit worried about this connection here:
>
> I guess that the forces there wonāt change as we move up or down, but joining lumber like that could be tough, right?
that point is a 12" piece of 2x4 that has the flat of the top 2x4 across the top, and the flat of the side 2x4 on the side.
With a couple screws (or lag bolts) through this from each direction, it would be pretty stable. There arenāt a lot of vertical forces here, it just needs to support the sled + top beam out to ~8" in front of the frame
If needed, itās pretty easy to add a triangular brace below this. It would be toenailed into the 12" parts and then screws through it to the side of the frame.
---
### Author:  [@dlang](https://forums.maslowcnc.com/u/dlang)
#### Post date: [January 23, 2018, 12:57am UTC](https://forums.maslowcnc.com/t/new-stock-frame-design/2025/22 "2018-01-23T00:57:51Z")
Example with the added braces
---
### Author:  [@rjon17469](https://forums.maslowcnc.com/u/rjon17469)
#### Post date: [January 23, 2018, 1:00am UTC](https://forums.maslowcnc.com/t/new-stock-frame-design/2025/23 "2018-01-23T01:00:12Z")
> [@bar](#):
>
> Pictures would be great!
Here are a few that I quickly snapped just now. Iām not completely finished, but all the major pieces are there. I was going to make a separate thread that goes in more depth of why I did some things, but the short story is I just had time to kill before my kit gets here. š
    
---
### Author:  [@dlang](https://forums.maslowcnc.com/u/dlang)
#### Post date: [January 23, 2018, 1:01am UTC](https://forums.maslowcnc.com/t/new-stock-frame-design/2025/24 "2018-01-23T01:01:25Z")
normally I **hate** toenailed joints, but in this case, they are merely providing vertical support to prevent the supports from twisting.
All fasteners are going into the face grain of the wood (no end grain joints). If I was building it, I would use lag bolts instead of screws, but Iāve been known to overbuild things š
---
### Author:  [@bar](https://forums.maslowcnc.com/u/bar)
#### Post date: [January 23, 2018, 1:07am UTC](https://forums.maslowcnc.com/t/new-stock-frame-design/2025/25 "2018-01-23T01:07:49Z")
What a gorgeous build! I really like how you did the angle 4x4s to push the motors forwards. Itās probably a little too advanced for the new stock design but love it!
---
### Author:  [@dlang](https://forums.maslowcnc.com/u/dlang)
#### Post date: [January 23, 2018, 1:16am UTC](https://forums.maslowcnc.com/t/new-stock-frame-design/2025/26 "2018-01-23T01:16:11Z")
@rjon17469 I second that, a beautiful build. I like massive overkill, which this is. But you wonāt have problems with flex š
---
### Author:  [@rjon17469](https://forums.maslowcnc.com/u/rjon17469)
#### Post date: [January 23, 2018, 1:19am UTC](https://forums.maslowcnc.com/t/new-stock-frame-design/2025/27 "2018-01-23T01:19:43Z")
Thank you guys! Itās definitely not a contender for a stock design, but it was still fun!
---
### Author:  [@dlang](https://forums.maslowcnc.com/u/dlang)
#### Post date: [January 23, 2018, 1:21am UTC](https://forums.maslowcnc.com/t/new-stock-frame-design/2025/28 "2018-01-23T01:21:59Z")
in my folding design, the height of the frame is a compromise to fit in 10ā 2x4s, if I used 12ā 2x4s I would make the frame wider (less unsupported plywood out to the sides) and if not using wheels, extend the sides down the ground.
I also worked to keep it under 80" (the standard height of a door in the US)
---
### Author:  [@Bee](https://forums.maslowcnc.com/u/Bee)
#### Post date: [January 23, 2018, 1:33am UTC](https://forums.maslowcnc.com/t/new-stock-frame-design/2025/29 "2018-01-23T01:33:36Z")
@rjon17469
this was what i was talking about in this post:
> [@Alternate Temp Bracing](https://forums.maslowcnc.com/t/alternate-temp-bracing/1090?source_topic_id=2030):
>
> lets have a conversation about 2x4ās and fastening systems. For my non US peeps please alter to MM in your head. Iām going to toss a premise out. If anyone wishes to argue or dispute it I will be glad to participate as long as you create a new thread where we can debate it. For the sake of argument we are going ot say a 2 x 4 is resistant to bending more on the edge of the 2 x4 rather that the 4x2 edge due to bias. One of the figures below shows this - Further when you introduceā¦
I sent the last post as PM thinking it was posting here, my bad.
I love your build.
Great work.
Thank you
---
### Author:  [@blurfl](https://forums.maslowcnc.com/u/blurfl)
#### Post date: [January 23, 2018, 1:49am UTC](https://forums.maslowcnc.com/t/new-stock-frame-design/2025/30 "2018-01-23T01:49:30Z")
> [@dlang](#):
>
> If needed, itās pretty easy to add a triangular brace below this
I think that some form of brace is needed there. rigidity is the goal.
Too, Iād advise spreading the verticals out to the ends of the workarea and adding one in the center, to better support the top bar. The closer the supports are to the motors, the more stable the frame is. The center support doesnāt need to go to the floor, but it should tie the bottom beam and the workare sheet and the top bar together.
---
### Author:  [@dlang](https://forums.maslowcnc.com/u/dlang)
#### Post date: [January 23, 2018, 2:00am UTC](https://forums.maslowcnc.com/t/new-stock-frame-design/2025/31 "2018-01-23T02:00:13Z")
> [@blurfl](#):
>
> Too, Iād advise spreading the verticals out to the ends of the workarea and adding one in the center, to better support the top bar. The closer the supports are to the motors, the more stable the frame is. The center support doesnāt need to go to the floor, but it should tie the bottom beam and the workare sheet and the top bar together.
The bending stress on the top bar is not that high. You have the weight of the sled (and a little pull from the motors if the bit has trouble cutting) pulling down on the ends. Using a 2x4 on edge, or a piece of unistrut gives you a lot of strength.
The current design has 54" between the edges of the verticals, so it only has 32" on each side from the supports out to the motors. I really donāt think that it would matter much to shrink it. The
The plywood hangs out on each side (72-54)/2 = 9" on each side, so thatās not much.
I would consider putting a tab/block on the back of the bottom beam (center and outer edges) to support the plywood. Also notice that there is a 2x4 across the top of the plywood to support it.
---
### Author:  [@blurfl](https://forums.maslowcnc.com/u/blurfl)
#### Post date: [January 23, 2018, 2:02am UTC](https://forums.maslowcnc.com/t/new-stock-frame-design/2025/32 "2018-01-23T02:02:33Z")
> [@dlang](#):
>
> bending stress on the top bar
Iām more concerned with bow and twist. Three connection points determine a straight line, two just anchor the arc.
---
### Author:  [@madgrizzle](https://forums.maslowcnc.com/u/madgrizzle)
#### Post date: [January 23, 2018, 2:12am UTC](https://forums.maslowcnc.com/t/new-stock-frame-design/2025/33 "2018-01-23T02:12:44Z")
My suggestion for the stock frame design is to make sure you can source all the parts from either HD or Lowes (as examples) and not be too intimidating or difficult to put together. It should be dimensional lumber but since 10-foot unistrut is readily available at both big box stores, it could be used as the top bar as in @dlangās design. I wouldnāt use unistrut for the entire frameā¦ too many nuts and bolts and is a bit intimidating to cut to length.
---
### Author:  [@Bee](https://forums.maslowcnc.com/u/Bee)
#### Post date: [January 23, 2018, 2:21am UTC](https://forums.maslowcnc.com/t/new-stock-frame-design/2025/34 "2018-01-23T02:21:56Z")
Good point. In my head for a few days Iāve been playing with a T design. 1 Unistrut at the top And 1 vertical 2 x 4 in the center. Then to support it an Easel folding design with 2 more 2x4s
The rest is either but some sort of vertical support to attach to. I want to figure out a method of cutting ( or drilling ) mounting holes, a jig that allows me to flip my work and cut a mirror pattern.
This has been rolling around my brain.
Thank you
---
### Author:  [@madgrizzle](https://forums.maslowcnc.com/u/madgrizzle)
#### Post date: [January 23, 2018, 2:34am UTC](https://forums.maslowcnc.com/t/new-stock-frame-design/2025/35 "2018-01-23T02:34:55Z")
I think we need something people can use to keep the work piece flat. This weekend I put a sheet of 1/2-inch ply on my plywood āframeā and it was bowed rather badly and I used clamps on edges to flatten it out. My plywood frame isnāt perfectly flat, but Iāve got some boards stiffening it up some. So some considerations should go into ensuring thereās a flat plywood/mdf/whatever backing that work pieces can be clamped to, otherwise it will cause problems in cutting. It may not need to be āstructuralā but I think we need something.
I like @dlangās design, but maybe with three A-frames (two near out edge and one in the middle)
Can I also suggest that we incorporate a place to mount the electronics? like a cut piece of plywood that the boards can get mounted to?
---
### Author:  [@Keith](https://forums.maslowcnc.com/u/Keith)
#### Post date: [January 23, 2018, 2:52am UTC](https://forums.maslowcnc.com/t/new-stock-frame-design/2025/36 "2018-01-23T02:52:33Z")
That is one BEEFY frame! š
---
### Author:  [@lilimade](https://forums.maslowcnc.com/u/lilimade)
#### Post date: [January 23, 2018, 3:09am UTC](https://forums.maslowcnc.com/t/new-stock-frame-design/2025/37 "2018-01-23T03:09:09Z")
with a unistrut frame i assume there is also no need for there to be plywood as structure? just wasteboard?
---
### Author:  [@Bee](https://forums.maslowcnc.com/u/Bee)
#### Post date: [January 23, 2018, 4:03am UTC](https://forums.maslowcnc.com/t/new-stock-frame-design/2025/38 "2018-01-23T04:03:22Z")
Here is a sketch of my basic idea. My representation is gorked on scale. David, perhaps you or anyone else could onshape this. if we could design a 2x4 to Unistrut mounting cap. It could be easy to put together and take apart quickly. The design is based on making the Skirt out of 9 inch boarders cut from a single 4 x 8 sheet first. Using 2x4 small pieces of 2x4 to hold the skirt edges together. This frame creates a negative space to mount the āworking sheetā. The 2 2x4ās 46 inches apart create the āWorking Sheetā main attachment. Two 46 inch braces between the uprights at the outer edges of the skirts. The Unistrut sits on top of that. A diagonal brace between the 2 upright 2x4ās support itās not racking.
1 more 2x4 as a ālegā to tilt back on.
The motors are on a 12 foot long Unistrut 21 inches above the working top edge - ~7 foot 9 inches tall.
BOM
5 - 8ft 2x4ās
1 3/4 inch sheet of plywood
1 12 foot Unistrut
2 motor caps
2 unistut mountng caps
1 box of deck screws
Thoughts?
Thank you
---
### Author:  [@dlang](https://forums.maslowcnc.com/u/dlang)
#### Post date: [January 23, 2018, 5:30am UTC](https://forums.maslowcnc.com/t/new-stock-frame-design/2025/39 "2018-01-23T05:30:20Z")
Thatās my feeling as well.
For the top beam, itās about twice the weight as wood and 4x the price ($20ish
instead of $5ish), but I think itās a valid option to have.
---
### Author:  [@dlang](https://forums.maslowcnc.com/u/dlang)
#### Post date: [January 23, 2018, 5:32am UTC](https://forums.maslowcnc.com/t/new-stock-frame-design/2025/40 "2018-01-23T05:32:34Z")
twist is an issue for chain alignment, but Iām not sure anchoring it is always
going to be enough.
bow doesnāt bother me, second worst case, just recalibrate (and if needed shim
one side), worst case, spend nother $6 and try a different board
wood can bow and twist badly enough that it doesnāt matter if you anchor it in
to places or three, it just wonāt work.
[Previous page](https://forums.maslowcnc.com/t/new-stock-frame-design/2025.md?page=1)
[Next page](https://forums.maslowcnc.com/t/new-stock-frame-design/2025.md?page=3)