Ooh, Shiny!
I was like a kid at Christmas when the UPS truck rolled up to my house today. I had just ordered the T-slot Aluminum Extrusions from 80/20 last week. They showed up this afternoon, and they are beautiful.
Each piece is machined to exactly the right length, and they were carefully wrapped in several layers of paper and cardboard, so there isn't a scratch on them.
I bought three 48 inch segments of 1 inch bar, and nine 18 inch segments. Taking the 3D printed corners into account, this should make for a printer about 22 inches wide/deep. It should end up with a printable volume somewhere in the area of around 18 inches in diameter by about 24 inches tall.
The exact printable envelope will depend on the length of the pushrods I use. Delta's can print outside their own frame on the three sides opposite the towers, so by using longer pushrods, they can actually expand the normal circular footprint to a larger semi-triangular one. The drawback to this is it reduces the vertical size of the build envelope, and you lose accuracy at the outside edges.
Shorter pushrods, on the other hand, will reduce the diameter of the circular build footprint, but raise the roof of the build envelope.
I figure I should need two of these for each end of each bar. There are 12 bars, 3 long and 9 short, for a total of 24 ends. If I use two on each end, I'll need 48. That leaves me with only two to spare, but I can always buy more at the hardware store as needed.
In case you were wondering what that yellow thing is in the background, its the Hurricane Lamp by loubie.
Each piece is machined to exactly the right length, and they were carefully wrapped in several layers of paper and cardboard, so there isn't a scratch on them.
The exact printable envelope will depend on the length of the pushrods I use. Delta's can print outside their own frame on the three sides opposite the towers, so by using longer pushrods, they can actually expand the normal circular footprint to a larger semi-triangular one. The drawback to this is it reduces the vertical size of the build envelope, and you lose accuracy at the outside edges.
Shorter pushrods, on the other hand, will reduce the diameter of the circular build footprint, but raise the roof of the build envelope.
I also got 50 each of 10-32 half inch stainless hex head machine screws, and 10-32 T-nut inserts. These were the "budget" inserts 80/20 offers. They also have a premium insert that fills the entire channel, but it was a lot more expensive.
In case you were wondering what that yellow thing is in the background, its the Hurricane Lamp by loubie.
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