

Drilling Resistance Measurement
Approved procedure, quick results
Just know what nobody sees!
The IML-RESI systems are based on the principle of drilling resistance measurement. In this process, a drilling needle is pressed into the wood at a uniform feed rate.
In this way, structures, internal defects or residual wall thicknesses of trees and wood can be determined anywhere and without great effort. Depending on the instrument series, the obtained data can be recorded electronically and then transmitted, evaluated and processed on your PC with a specific software. This is a precision job that delivers significant results.
Drilling Resistance Measurement Results
The measurement profile delivers information about the internal condition of the wood. It show annual rings and density behavior as well as decayed zones in the wood.
The y-axis describes the drilling resistance in % (Amplitude height).
The x-axis describes the drilled way in cm.
Frequently asked questions about „Drilling Resistance Measurement“
One of the best features of our drills, especially for arborists working in the field of inspecting live trees, is the fill-in methods of the bits. Our bits are 3mm and while they are already small in size, when the needle retracts it pulls the wood back in to fill the hole. Immediately after you would not be able to stick the bit fully back in the hole that was drilled. As time goes on the tree seals the hole.
The wood inspection drill measures the force of the needle turning through the wood product. For example, when the bit hits any soft decay the force on the graph will drop and if the needle hits a hard, brittle decay the graph will spike. If the bit runs through a cavity area the graph will drop measuring no resistance for the bit. The measurements are then collected on either a wax paper strip (F-Series) or electronically recorded for an instant upload (PD-Series).
Application areas Drilling resistance measurement
IML Drilling Resistance Systems
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IML-RESI MD300$ 995.00
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IML-RESI F-Series$ 4,100.00
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IML-RESI PowerDrill ®$ 8,135.00
As the Manager of Member Services for our Joint Action Agency, I can tell you that Amber and Kevin made the process of purchasing and training on the RESI PD-500 pain free. They are now an asset to our organization along with the pole equipment. I could not ask for a better experience and the drill has performed flawlessly since it was put into service.
We purchased the 400XL for testing trees in our community and so far it is all we expected. Communication throughout the entire purchase has been great and Bob was very helpful in the training of the operations. I was able to use it with no problem the first time with no major issues. Loading the paper was the most difficult.
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