(Yet another) 80/20 MFT/SYS Cart

I bought this angle stock and plan to cut it down to smaller pieces to mount my MFT top using t-nut and screw to mount to the extrusion.

Angle Stock

Like this ... Angle Brackets

Now for my challenge, I’m making the height of my cart, without top, slightly less than my table saw, jointer, and planer, so it can serve as an outfeed for them, and it will be higher than them with the top attached so the table saw can be the outfeed for it (I’ll use the smaller piece of MDF without holes as a replaceable piece where I cross cut like a real MFT table).  The challenge, how do I attach the top in a way which allows me to remove in a reasonable amount of time?  With wood side panels, it will be difficult to reach inside to unscrew things. The tabs are aluminum so I’m not sure how well they’ll hold without stripping out. Perhaps some sort of retainer threaded through the aluminum with female end and a small screw which is recessed into the table from the top so I can power drive them out and fasten by hand as needed?
 
I’m thinking something like this which would thread into the bracket from underneath, because of its height somewhat into the MDF which is counterbored, and a screw with wider head which is countersunk from the top.  Do you think that would work well?  Where do I find smaller versions of these, not even sure what they’re called.

Coupler
 
Bugsysiegals said:
How did you attach your casters to the bottom of the extrusion?  We’re you able to use t-nuts?
Click to expand...

Using 3 of the 4 holes in the caster base, thread one 5/16" cap screw into the end hole in the corner extrusion (threaded) and 2 others into t-nuts in the front/rear & side extrusions. 4th hole is unused.

RMW
 
Gents, I recently came into possession of a table made from 80/20 extrusions that I’m breaking down or actually reconfiguring to serve as a second JumboMFT or assembly table. I’ve come across a right angle internal fastener I haven’t seen before, and none of my hex keys seem to fit it. It looks to be about a 7mm hex hole, and of course 7mm is the hex size that seems to be skipped in most sets. But, I’m not sure if a hex would even work here as the fastener seems to have some key veins, 6 point it appears. Never seen a tool like this so wondering if you know how I can remove these threaded inserts.

Here are the pictures:https://photos.app.goo.gl/UNCtk0ed2Rjqm6uv2
 
ryanjg117 said:
Gents, I recently came into possession of a table made from 80/20 extrusions that I’m breaking down or actually reconfiguring to serve as a second JumboMFT or assembly table. I’ve come across a right angle internal fastener I haven’t seen before, and none of my hex keys seem to fit it. It looks to be about a 7mm hex hole, and of course 7mm is the hex size that seems to be skipped in most sets. But, I’m not sure if a hex would even work here as the fastener seems to have some key veins, 6 point it appears. Never seen a tool like this so wondering if you know how I can remove these threaded inserts.

Here are the pictures:https://photos.app.goo.gl/UNCtk0ed2Rjqm6uv2
Click to expand...

Try some torx drivers.
 
[member=51886]ryanjg117[/member] please try to get more info on the source of that material. It is not made by 80/20 but some other company.

Also, very interested in the source and name of that hollow set screw. It allows the movable butt joint connection needed to make an MFS type construction without the milling usually required.

I’ve never seen a screw had like that either but try Torx.
 
Michael Kellough said:
[member=51886]ryanjg117[/member] please try to get more info on the source of that material. It is not made by 80/20 but some other company.

Also, very interested in the source and name of that hollow set screw. It allows the movable butt joint connection needed to make an MFS type construction without the milling usually required.

I’ve never seen a screw had like that either but try Torx.
Click to expand...

I'll try Torx tonight and let you all know. I believe the machine was custom built in Germany, so the extrusions could be Bosch Rexroth, I'm not sure. There were also two SEW-Eurodrive pumps and two SEW-Eurodrive 0.37KW gear motors mounted to this table, along with two massive 50mm diameter linear shafts with bushings and a cylinder that controlled the adjustable height of the table. It's way beyond my pay grade but it will perform nicely for my meager woodworking and shop needs. :)
 
Agree with Michael definitely not actual 80/20 extrusion but I would love to get my hands on some of those fasteners. If anyone tracks them down please post the info here.

Thanks.

RMW

(EDIT) After re-looking at the photo seems to me the part threaded into the extrusion requires a custom key for installation. Looks like it might also be factory installed based on the dimple that appears to be peened to lock the fastener in place and prevent it from turning?

[attachimg=1]

RMW
 

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[member=8712]Richard/RMW[/member] makes a good point, even with the right driver (which might be a special tool with a long round shaft extending beyound the external splines) you’re going to have a hard time turning that screw without grinding away the aluminum that has been peened into the thread.
 
Richard/RMW said:
Agree with Michael definitely not actual 80/20 extrusion but I would love to get my hands on some of those fasteners. If anyone tracks them down please post the info here.

Thanks.

RMW

(EDIT) After re-looking at the photo seems to me the part threaded into the extrusion requires a custom key for installation. Looks like it might also be factory installed based on the dimple that appears to be peened to lock the fastener in place and prevent it from turning?

[attachimg=1]

RMW
Click to expand...

I don't see a peen at all. I see some extruding/rolling of the material to make way for the threads of the insert.
 
I've got a call into 80/20 to determine what kind of fastener this is. Apparently they stocked it some time ago but discontinued it because it did not sell. I'll let you know what I discover.
 
This looks like an Item24 "Automatic" fixing
http://product.item24.co.uk/en/home...fastening-set-8-bright-zinc-plated-38808.html

PIC_PRD_NST_12-0008c4__SALL__AIN__V2.jpg


GRA_PMA_VBT_0038808y__SALL__AIN__V4.jpg




Their Line 8 (multiples of 40mm x 40mm with an 8mm slot) is just the right size for Festool clamps

There seems to be representation in the UShttp://www.item24us.com/
item America, LLC
12105 Insurance Way
Hagerstown, MD 21740
Phone: +1 (301) 665-9772
Fax:    +1 (301) 665-9775
 
[member=26680]wheely[/member] [member=21642]Neohio[/member] [member=3192]rvieceli[/member] great sleuthing guys!

Didn’t know about Item before.

I’ve bought tons of stuff from McMaster including lots of T-slot framing and fasteners and never noticed that particular item before.

Don’t think I have a T50 bit either...
 
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