It’s the Friday before Memorial Day. The Charlie Hudson rule states: never use a vacation day before a holiday; either the boss will let you go home early or someone will bring in food. There appears to be a corollary to the Charlie Hudson rule: someone may do a quick design tutorial. This may be too simple for melynda_tran, but for any lurkers out there here goes.
To make the stand you need to make a cross: two pieces that meet at a 90 degree angle. So first, design your stand. This is just a simple design, probably a lot simpler than you want, but it is quick and inside my design skills.
If you use Inkscape, the first thing to do is go to Edit -> Preferences and click Tools. You should get this box. Select Geometric Bounding box and click the red X. This means Inkscape will measure from the center of your lines, like the glowforge and not the outside of your line.
I’m going to create my stand from an oval, a rounded rectangle and a square-cornered rectangle:
I just made these with the create rectangles tool and the create circle tool. To make life easier for everyone, after I made them I went to the W and H box and made their dimensions nice round numbers. I also positioned the rounded rectangle (the X and Y box) at easy to do math coordinates. If it isn’t clear, you can type in those boxes to change the dimensions and locations of your objects. The square-cornered rectangle is the same width and half the height of the rounded rectangle. The oval is 30mm wide and 16mm high.
Next, I selected the square-cornered rectangle and changes its X and Y to the same X and Y as the rounded rectangle. For the oval I had to do math. Take 50 (the X of the rectangle) and add 45 (half of the rectangles width, which is 90) to get 95. This is the midpoint of the X-axis. The oval is 30 wide, so divide it in half (15) and subtract that from 95 to get 80. This is the value of X for the oval. For the Y-axis, add the height of 20 to the Y position of 150 to get 170. 170 is the top of the rounded rectangle. The X and Y are always the bottom left-hand-side of an object. Divide the height of the oval in half (16 / 2 = 8) and subtract it from 170 to get 162. This is the value of Y for the oval.
The three objects are still rectangles and circles: they have to be converted to paths. So select each one and then to Path -> Object to Path. Then select all three of them and go to Path -> Union. You wind up with this:
At this point I’d go back and design something better, but I’ll press on since this is a design demonstration and not a make the best looking stand you can challenge. At this point we have half of a base. So go to Edit -> Copy and then paste it. At this point we need to make a slot in each half so they fit together. The height of the slot is half the height of the base and the width is the width of your material (we’ll use 3mm.)
If your material is actually 3mm thick, and you make a 3mm slot, you will have a loose fit. For a tight fit you need to factor in the kerf. For most 3mm materials the kerf is about .008” (.2032mm). We don’t want it to be too tight, so we’ll try .18mm for our kerf. I’d make a test stand first to verify the kerf you want. If you make all of the stands with a guestimated kerf you will be sorry. So, subtract off .18 mm from the width and change the W box to 2.820. You subtract off the whole kerf, because each side of the slot loses half of a kerf to the laser beam and you have two sides. I wouldn’t worry about subtracting any kerf from the height.
Then do the math to center it (95 – 1.41 = 93.59 for the X). Go to Path -> Object to Path and then make a copy of it. The copy has to be placed at the top of the other base half. The math for the top is the Y-value for the top piece (180), plus the height (28), minus the height of the slot (14).
Select one of the base objects and then select its slot. Go to Path -> Difference. Do it for the other pair and you will have this:
You now have a base without a stick-thingee for your table numbers. So add a stick thingee, it is just a tall rectangle. Remember that it has to be added to the base with the slot in the bottom. The math and technique for doing this is presented above.
Save this. This is your stand. DO NOT ADD THE TABLE NUMBER BEFORE YOU SAVE IT. Once saved, create a table number and then union it with the stick-stand. Repeat as necessary, or just elope.