The wagon wheel sign pieces have gathered dust for almost a month as we were so busy with other things. Today the shop was quiet and I finally got the chance to do some assembling. First I had to create a file and cut the center layer to accommodate the steel frame. This frame would be welded up segments of 5/8″ steel rod and a piece of horizontal 1.5″ square tubing. The slots for the 5/8″ tubing would be cut into the material. The square tubing slot was to be cut as part of the offset outline milling.

Here’s the shot of the tool paths ready to be sent to the MultiCam.

Once I had cut the piece from 30 lb Precision Board it was ready to assemble with the rest. I cut and laid the steel into the slots and then tacked it in place using the actual wheel as a jig. The pieces were then removed and welded solid.

I then used PB Bond 240 glue, a one part adhesive made by Coastal Enterprises to fasten the components. I also used plenty of screws to clamp things together and keep them in line. These screws will stay in place.

 
The project had six layers in all which makes for a pretty beefy sign!

-dan

For the big 3D globe logo the client asked to it to look like concrete or granite. There are plenty of ways to do this but the easiest is with paint. The fellow who is making the globe will most likely have the globe hard coated with a bed liner type spray. This will leave a slightly bumpy texture. The piece can then be painted a solid or blended solid color with as many coats as necessary. In our shop we would most likely use a top quality 100% acrylic house paint and brush it on too. For the rocks on a recent project we painted it just this way. Then came the quick magic step.

To get the different colored dots or speckles we use an undercoat gun with only twenty-five pounds of pressure. Higher pressure will give you smaller dots or speckles. Undercoat guns are very inexpensive and available at any auto parts store. They come in a variety of shapes and sizes, some with special pots. We buy the cheapest ones with just a pipe, trigger and handle. They are easy to use and easy to clean.

The dark color (brown in this case) was done first. The key is to take it easy and do multiple passes. It is far too easy to put on too many and then you would have to start over. I like to spray from at least there feet away to get an even pattern. Have a helper keep the hose you are dragging around from rubbing across the finished work.

 I stick the intake pipe into my bucket and spray away…. rinse after the first color and then go on to the next color. Masking takes a whole lot longer than the spraying by far.

 -dan

The double sign tree took a while to do because the sculpting and painting were fit around the many other projects underway in the shop. Jenessa did the sculpting and painting on the balloon sign and did a great job too! Amazingly, this was only the second sculpture she has done.

With the relief creed and sliced it was time to hollow out each section. It’s not hard but it does have to be done in a particular order. First I created an oval inside each section, making sure the border width took into account the slope of the side of the piece. I did this by selecting the new oval vector and then hitting render what I could see the slopes as they related to the size of the oval. I then selected all of the oval vectors and made them into zero height reliefs. They were then dropped to the bottom of the plate to match the sliced sections.

Then select the relief you wish to merge… the center oval. Hit the green check mark…  This drops the center portion to zero height.

The end result is the hollow slice of the big logo.

I repeated these steps on each of the slices except for the top there which were too small to save any material by making them hollow.

Then it was time to cut the reliefs to make them more efficient to nest. I first drew a vector rectangle around the larges one. I drew a vertical line through it and centered it. I moved the relief out of the way.

I then used the jigsaw tool on each half to form new vectors. I deleted the original rectangle and vertical line.

I then made these two rectangles into zero height reliefs. I duplicated them as many times as I needed to slice all of the oval reliefs

Then I positioned the oval relief inside and opened the MERGE command. This time I would use MERGE HIGHEST.

Then I used the slice command to take away the zero height part.

These operations were duplicated for each relief I wanted sliced. The slices are now ready to be nested and then tool path and send off to the router. Keep in mind that this makes HALF of the 3D logo.

I won’t be routing this piece as it was created only to show here but I look forward to seeing what my friend in California does as he recreates these steps for his project there.

-dan