These stands are reasonably easy to make, It only took me a day to make these while working on this instructable.
Step 1: Materials
4X wood 760X90X40mm
2X M8 bolt
2X bolts M8X90mm
2X rope about 1M
Step 2: Marking Holes
Next mark the middle (see the pictures) so you know where to drill.
You only have to mark one of the beams, we will use this as a template in the next step.
Step 3: Drill Holes
When you have found the right drill you can start drilling your template.
Step 4: Marking Holes 2
Don't have to explain much I guess just look at the pictures.
Step 5: Drilling Holes 2
Then when you found the right drill you can start drilling.
TIP: when you drill through wood and you need the exit hole to look good. Put a piece of scrap wood under the piece of wood you're drilling. See the difference in the last picture
Step 6: Cleaning Up Holes
Step 7: Making Rope Part
After cutting the rope you need to thread it through the holes and tie a knot in the end.
When you tied your rope make sure the feet of your stand flat on the workbench.
Now mark where rope exits the stand.
The last thing that needs to be done is cut the rope and tie a knot in the end (see the pictures).
Step 8: Making Room for the Slackline
What I do here is cut out a triangle in each leg so you can put the slackline through the stand.
Step 9: Cleaning Up
Make sure you get rid of all those sharp edges.
Step 10: All Done!
I hope you learnt something from this instructable and have fun building this stand.
Show how you made them in the comments below!