THIS MAY BE CONTROVERSIAL Hey Nutters thanks for the feedback regarding my purchase of a new saw and being Friday I thought I would ramp up the process! It seems to me that the https://facebook/…/MK-Diamond-Aust…/428149473905692… rep may of tampered with the truth when extolling the virtues of their saws which seems to have been dismissed by the Penhall employees responses through PMs and posts. Now this makes me angry because I had previously sent off a letter of interest to the Parent company MK Diamond in the US regarding an after market modification for floor saws albeit with no response. After a phone conversation with Grant Joyner he said that he would make sure it got to the owner so I sent the original email and I also sent him a post to a short video of my 4800D cutting with a modified FS830 blade. Now there is nothing remarkable about a FS4800D cutting concrete with a FS830 blade other than the fact that the blade had been modified. Grant Joyner commented that a customer of his with a 44HP MK was able to cut full depth and cut straight with the superior MK diamond blade that his customer was happy to pay 5-600 for (20). I can only conclude that Grant didnt realise that it was a 24 blade and any self respecting cutter would know that step cutting is the go. When you plunge full depth you increase the cutting face and suck up the horses and decrease the blade life. Well the blade depicted in the video was a Husqvarna FS830mm x 600mm blade and I would challenge any cutter/nutter to cut with the FS830 600mm blade on a 4800D at the rate which my video depicts. Approximately 20 metres x 190-225mm depth + 4 curb & channel cuts including maneuvering between cuts=8 MINUTES. Before you jump in with comments about the piss ant size of the FS4800D I am trying to demonstrate that you can alter the performance of any blade to achieve faster cutting rates balanced with acceptable life. This is harder for suppliers as they need to create expensive molds with different heights widths and radii. My method allows modification after production from any blade manufacturer. The advantage of this is if the customer wishes to increase the speed by sacrificing a bit of life it is easily accommodated regardless of blade diameter. The most common area where nutters may have experienced this is in core drilling applications. Since Adam was a boy the core drill segment numbers were determined by the bit diameter eg 4 bit was a multiple of 2 + 1 therefore 9 segments of 1 (25.4mm) length. Now this was just a rough guide established as the industry evolved to limit and control parameters . I experienced this some time ago where I had several thousand 200mm diameter holes which a standard bit wou ld take X 2 + 1 segments (17 segs) We found that by reducing to 14 segments and running the bits faster we cut drill time from 13 minutes per hole to 2.5 minutes a hole but the life of the bit went from 50 holes to 120 holes per re tip. Once again a small example in comparison to the massive jobs with much larger diameters,deeper etc but all relevant. Being able to modify the blade post production can have similar production acceleration by changing a single parameter. Any self respecting nutter and supplier (drill/wall saw/wire saw etc ) would know that their is a line between faster cutting and economical tool usage. This applies throughout all the concrete cutting disciplines Drilling/Wall/Floor/Wire etc that I have posted through the ED Dempsey videos. Thats why you can buy wire with 45 beads/42 beads per metre etc or blades with less segments per diameter you are simply reducing the resistance to deal with the hardness of the aggregate. That is why we have gearboxes or speed controls to vary the parameters. It seems to me that a lot of people out there dont know about a singular formula that relates through all cutting processes. Concrete needs to be cut at a particular SURFACE SPEED regardless of the applied process. This will vary by the hardness of the aggregate to be cut just like Granite and Marble in the stone industry. This is common knowledge in the stone processing industry which out dates nutters by many years. It annoys me to hear ignorant people like Grant Joyner make uneducated opinions about improving our industry. To me faster cutting means less time on the job and more time for life. To those of you to young to remember, when I first started back in the 80s a 18(450mm) blade used to cost approximately $900.00 with a life expectancy of between 8-15000 inch feet or 2800 metres x 25mm depth. In those days the Diamond tool owners drove Porches now volkswagons as it should be LLoyd John Williams. This is not an advertisement Deon Cawthray
Posted on: Fri, 28 Nov 2014 09:44:59 +0000
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