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Blog series by johnstoneb updated 12-16-2015 05:47 PM 7 parts 10354 reads 26 comments total

Part 1: How to over think a toy build.

12-27-2014 08:50 PM by johnstoneb | 2 comments »

I took wood shop in high school for 3 years. The instructor was strict that we draw precise plans and follow them to the letter. This was good especially for kids just learning. Learn a way to do something that gives you a base to deviate from and come back to if the deviation doesn’t work. I still like to draw plans (usually not as precise but I like to have a plan). I first started building the Wood magazine contractor series with a little trepidation. I wasn’t sure how th...

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Part 2: Finished

02-25-2015 04:54 PM by johnstoneb | 4 comments »

I have finished all the Wood Magazine Contractor Toys and my grandson left Tuesday with the last 4. They had to go to work as soon as he got home. This does prove that those toys work pretty well. He has had the front loader since last summer. They are holding up well. While there are parts of all the toys that could be improved they are well designed and hold up well to 3 year olds.

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Part 3: The Concrete Pump

12-06-2015 03:11 PM by johnstoneb | 5 comments »

I have built all of the toys in Wood mag. construction series for my grandson. Last spring while visiting my daughter she wanted to know what toy I was going to build next. I told her none I was through. Somehow concrete pump came up in the conversation. My grandson got told to ask me to build him a pump truck. I told him he needed to talk to santa. His response (typical 4 year old) was santa build plastic toys, grandpa makes them from wood. I came home with a project and no real idea h...

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Part 4: The Concrete Pump basic truck

12-07-2015 03:41 PM by johnstoneb | 6 comments »

About the end of August I decided I had better get started on building something or would have nothing for Christmas. I started the layout and cutting material for the build. I had resawed a bunch of maple for drawers on my toolbox build so had quite a bit of maple about 5/16 thick that I planed down to 1/4” and cut up some walnut. I was just getting ready to start glueup when a friend called and wanted to know if I wanted to run the Main Salmon. That was a no brainer of course I wa...

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Part 5: The Concrete Pump - The boom

12-08-2015 03:38 PM by johnstoneb | 4 comments »

It’s time to get serious and finish this. The boom will make or break this build. I drew this up on Sketchup and animated it everything bends properly and seems to have the clearance needed. The boom is a little complex The first three sections only have to fold out 180 degrees. The 4th section has to fold around 245 degrees and the fifth section has to go 210 degrees. There are some linkages that have to be made for hydraulic cylinder clearance. The 3rd section has an offset so ...

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Part 6: The Concrete Pump - The Hydraulics

12-10-2015 05:00 PM by johnstoneb | 2 comments »

Hydraulics-I have a 4 yr old grandson not only uses the word but knows what they do. So this boom is going to need hydraulic cylinders. I did find on my camera a picture of the boom assembled and somewhat upright and extended. No place to extend outriggers so that’s all the extension you’re going to see. For the cylinders I decided to use various sized dowels. The first cylinder was to be 3/4” barrel with 3/8” shaft. I thought I could drill the barrel on t...

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Part 7: The Concrete Pump - The Finish

12-16-2015 05:47 PM by johnstoneb | 3 comments »

I finally finished the boom and got everything installed. The linkage for the Hydraulic cylinders on the outer two boom sections would need to be redesigned if it actually had to work but it gives the illusion it is working. That is what counts on a toy. Outer 3 sections of the boom Everything installed and working Here everything extended Hopefully my grandson can figure out how to fold and extend this boom. I didn’t run any piping on the boom figured ...

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