Showing posts with label rock tumbler. Show all posts
Showing posts with label rock tumbler. Show all posts

Thursday, 19 September 2024

Summer Project Complete

 Every spring I set out with a goal to finish enough rough rock to allow me to replace the cabochons and guitar picks I have sold through the summer in the shop and on line and this year I set out with high expectations because I had beautiful agate and jasper to work with.

I set my Cab King up so that I can use the coarse wheels on the left and also access the trim saw to cut shapes etc..

This actually makes the first stage of rough shaping go much faster. The plan is to take all pieces (this year about 60) through this phase and then remove the trim saw attachment (great saw by the way) and put back the three finishing wheels and polishing pad. And the plan was going perfectly until my sciatic nerve started to really act up and I couldn't stand up long enough to use the machine. So here I was with 60+ unfinished cabs and cold weather approaching. I needed a plan "B".

My wife Vickie (A.K.A. The Real Artist) knows how to use our Lot-O-Tumbler so we decided to finish them with it. The first problem was coming up with a big enough load and we did that by adding smaller, round, polished silicate stones. We sort of picked up where the wheels had left off by going with 600 grit and using more than usual to take into account the larger surface area of the smaller rocks. Normally I go one day on this grit but this time we went two. Vickie then moved on to 1000 grit silicone carbide pre polish and then to tin oxide polish. In both steps we added more grit and went two days. Finally, she did a burnishing cycle with Ivory Soap and again, we used more than normal.

The results were more than acceptable and there was virtually no breakage or damage. Here's how the total load looked.


And here's how it looked when all the round and small stones had been removed.


Now that I look at it, there were probably more than 60 pieces. But I ended up with some great cabochons,


and awesome guitar picks!


Would I go this route again in the future? Probably not simply because I love the process and I think the Cab King finishing wheels do a slightly better job. Also, you can't finish pieces that have crystal druzy pockets this way. But this process had it's advantages. First, it was faster and second it saved the wear on the finishing wheels but most importantly it gave us a way to finish the job with me out of commission!



Saturday, 16 April 2022

The Lap of Lapidary is Open!

 I often see people asking how to set up a lapidary shop so I thought I'd show mine. First off, decide what you want to do- cut, grind, shape, polish, make jewelry- the options are endless. Lapidary equipment can take up a lot of space and be expensive so you might have to be selective. In my case, I have a dedicated powered shop 24 ft. X 12 ft. so I have lots of room. I could even fit a few more pieces in if anyone wants to make a donation (heh,heh)! Here's the set up.


The window (not shown) and fan provide good ventilation and it is well lit. I also run an air filter. I made most of the tables and they are sturdy and solid- a real must.

In my case, I decided I didn't want to cut really large rocks so my two largest saws have a 10 inch blade. The oil saw was made 60+ years ago by a company in Edmonton Canada (long gone) called Mercury. It is cast aluminum so will last a lot longer than I will!


It has a motorized feed and rock vise that I rarely use since I run the rocks through by hand. I made the splash guard and my daughter Sandra installed the new 1/2 HP  motor last year. Notice my rock filing system in the background! I use it for cutting large rocks for specimens and slabs.

My other large saw is one of my favourite pieces. It is also 10 inches but is cooled/ lubricated by water.


This saw is made by Hi-Tech and I have a sliding vise and bridge for it. It is made from an amazingly sturdy and rugged polyethelene which means it won't rust and is much easier to clean. And it is so much easier (and I think healthier) to work with water. I cut slabs with this saw but can also cut shapes from the slabs with the thin blade. I can even use it to cut glass.

I am very fortunate to have a wife who loves to comb the nearby beaches and since every visitor to our store gets a free local rock, I need a tumbler. Mine is a Lot-O-Tumbler that holds a 4 LB load.


It is an absolute horse and I run it all summer. Since it is a vibrating tumbler, I go from rough to polished finish in a week or less so I will do about 25 loads each year. The concrete base stops it from going on a tour of the shop.

It is only after I have cut a rock that I can decide what I want to use it for. Since we have fantastic local agate and jasper, many become polished specimens that are sold in the store. And for this task I have another amazing machine called a slant lap.


This machine is also made by Hi-Tech and extremely durable. It grinds a flat surface by use of round plated that vary in coarseness and is cooled by water so very easy to clean. I hang my different plates on wooden dowels above the machine. These machines are also available with a horizontal top but I find the slant angle mush easier if your back is as old as mine!

I have a flat top grinding machine that I use for a variety of purposes.


This machine has a rotating spindle to which I can attach either a cutting or grinding bit. I use it for shaping stone or glass but can also use it to cut grooves around pieces to allow me to use a wire wrapping technique. It is also cooled by water. The black object behind is my air purifier.

In order to drill holes in rocks, it must be done under water. And while some can do it by a hand held tool, I much prefer a drill press.


Here, I have a diamond bit installed and a tray so the piece can be drilled under water. If you want more info on this operation, just contact me.

I have to say that while I like working with all the various pieces in my shop, if I had to whittle it down to a favourite, it would be the Cab King!


This machine allows me to polish surfaces and create high polished cabochons for pendants. I have had other similar machines but there are a few things that set this one apart. Most importantly, the wheels are cooled by water that comes from above (as opposed to below with some other machines). This avoids contamination. Secondly, when compared to other units, this one is quite quiet. Thirdly, the wheels on one side can be removed and replaced by an 8 inch trim saw running off the same motor and it is a really good trim saw! And the motor is powerful enough for two people to work on wheels on different sides at the same time. Lastly, it is very easy to clean.

If you have any questions, I'll be happy to answer them and if you happen to find yourself on Digby Neck, in Nova Scotia Canada, come on by and see them in action.

So there you have it. And while some might prefer to live in the lap of luxury, I much prefer living in The Lap of Lapidary!