Janka Hardness Scale

This blog post is to accompany my recent video on You-Tube in which I sawed up a small apple log. Below is a pic of the wood hardness scale which is also known as the Janka Scale

The scale was developed as a means for displaying the results of the Janka hardness test. The test uses a 2″ x 2″ x 6″ piece of wood and a 0.444″ steel ball to determine how hard the wood is. The test figures out how many pounds per square inch, or PSI, of force is needed to push the steel ball half way into the wood plank.

As you can see above Apple for some reason is not on their scale but after some research I found it on another wood database site. According to their site Apple has a Janka rating of 1,730. This puts apple just below of Hickory but above other common hardwoods I saw at my mill.

Hope this helps and gives you all a better understanding on how wood density is measured.

Nathan,

T Shirt Order

Short blog post to announce that a new T Shirt order is starting today. As always I will run the sale for 7 days then close it down and place the order. This keeps me from being stuck with tons of inventory and having to guess people's sizes etc. The shirt being offered this time is the original gray OTW shirt with my logo on the front and back. The price for the shirt is $25 which also covers shipping, those that need a 3XL will have to pay $27, the manufacturer went up on the price for larger shirts. All proceeds from this sale will go directly back into the You-Tube channel. This is a great way to support what I do on this channel and help me obtain equipment/cameras to further improve the content.

To order your shirt go to my website www.outofthewoodsforestry.com and click on the online store tab.

THE GRAPPLE IS COMING! FINALLY,

This will be a quick post on the blog directed toward any fellow tractor or equipment operators out there that follow my work. After setting in a crate for the past few months next week I plan on finally installing the grapple on the tractor. I have already purchased all the necessary hydraulic couplers and plan on measuring for my hoses this week. The grapple will be powered by the rear remotes on the tractor so I anticipate two hoses around 12ft long.

Now on the the advice I am looking for with this post. The couplers on both the tractor and grapple are 1/2in. What size hydraulic hose should I get to power the attachment? I am thinking maybe 3/8 but some say on forums to get 1/2 and other say 1/4 is more than enough. So I would appreciate any similar experiences that you all might have with running attachments on a farm tractor similar to a grapple. You can post your response in the box below which works just like You-Tube comments. Thanks in advance and I appreciate the comments/email from my previous post. I am about out of the woods with this back episode and hope to be back to being productive by tomorrow.

Thanks again,

On yeah, the photo below is of the grapple in question, and is it 72in in length in case that spec is needed for your hose diameter suggestion.