FREE SHIPPING INSURANCE 2 YEAR WARRANTY 2 MONTH MONEY BACK

Latest Logosol articles.

  • Slabbing larger logs with the Big Mill System.

    David a Logosol owner had the wind fell two trees, and he wanted to mill a 5m section of the Narrow Leaf Peppermint Gum into slabs. Although David has an M8 system on site, the log was going to be too large diameter and probably too heavy for the M8 to mill. So I offered to drop in with some Big Mill System components and help with some slabbing of the log.

    The Big Mill System comes in a number of configurations, and can be evolved as needs change and opportunities arise.

    The usual Big Mill System configurations are:

    • Timberjig - uses a home made timber guide rail.
    • Big Mill Basic - a Timberjig, 2.75m guide rail, adjustable rail supports that bolt onto the end of the log.
    • Big Mill LSG - Alaskan style jig made up of two Timberjigs and other components.
    • Big Mill Pro - A Big Mill Basic, a second 2.75m guide rail, plus extra wide rail supports, and the LSG components.

    In this situation we used a hybrid of the above including:

    We started with two 2.75m rails connected together to give us 5.5m of rail, which would mill the 5m length log nicely. With the two rail supports from the Big Mill Basic we attached them to the end of the log and positioned the rail. The supports being adjustable we were able to position the rail to the exact height (with respect to both ends of the log) to get us a first slabbing cut.

    As you can see the LSG uses the previous cut surface to support the rig, while the bar cuts the slab below, and very accurate dimensions are produced. In this case we wanted 75mm slab thickness. They were perfectly dimensioned across the slab and down its length.

     

    For accuracy we used the saw carriage from an M8 because this carriage can be fitted with a magnetic bar tip holder, ensuring no sag of the bar and giving us a very accurate and flat first slabbing cut. Plus the winder on the M8 saw carriage makes the process more enjoyable.

    Once the initial cut was made the and waste removed, were left with a very accurate flat top surface. We could continue to adjust the Big Mill rail supports downwards by the built in gauged increments say another 2 inches, and use the M8 carriage on the Big Mill rail another time, but as we have an LSG on hand, we decided to use it as it's easier, can cut wider slabs and will produce more accurately dimensioned slabs.

    As you can see the LSG uses the previous cut surface to support the rig, while the bar cuts the slab below, and very accurate dimensions are produced. In this case we wanted 75mm slab thickness. They were perfectly dimensioned across the slab and down its length.

    20161006_163114

    With the bigger chainsaw and longer bar it is pretty much required to have two operators, one at the chainsaw end and another guiding the bar nose end. This can be done safely. With the smaller configuration a single operator can manage the rig, but in most cases we both guided the rig as it's just easier and two people were there.

    The remainder of our time allowed us to cut three more slabs from the log and we are very happy with them all. All were cut at 75mm thick.

    David and co. with his newly milled slabs. David finished the log the following day and will dry them in the bush for a while while thinking of the best projects to take advantage of this windfall.
    See our Big Mill System configurations.

1 Item(s)