DELTA-F

We at FAMAG believe, that in ancient times a clever inventor had the idea of forming a saw in a circular way in order to weld the beginning to the end. Now all that was missing was a machine take-up device and the hole saw was invented. We here in Remscheid also think that the term of the tool is very appropriate, because in fact you do not drill but saw in the material. For this reason, we do not say: We drill a hole with a hole saw. We name it: „We saw a hole with a hole saw.“ No idea if the hole saw for metalworking or the hole saw for woodworking was invented first. However, saws with soldered-on bi-metal or carbide elements certainly appeared in the market much later. What has never worked, is that you use a hole saw for metalworking for wood-based materials. By the way, not the other way either. But one is for sure: Both classical designs do not work at all in modern thermal insulation materials.

The awareness and legal regulations for thermal insulation in house building have changed fundamentally within the last years. A whole range of new materials for thermal insulation have come onto the market and are used in practice now. But, what no one has thought of are the regrettable craftsmen who should work on these new materials. It is much more the rule than the exception, that for those materials with completely different cutting characteristics no really convenient tools are available for a proper use. Best example are the soft wood fibre insulation boards. In practice, however, circular cut-outs must be made in these boards for e.g. wall sockets, distribution boxes or lighting systems. When we talk to the thermal insulation professionals about the use of hole saws in insulation boards, we often get a frown, as they have made bad experiences with bi-metal hole saws. Of course, the bi-metal hole saw is designed for metalworking and works in insulating materials not exactly satisfactory, respectively only for 10 seconds. Within that time, the fibres of the insulation board wrap themselves around the teeth of the hole saw and clog them. What is happening now? Nothing – it does not go on a millimetre and the hole saw plucks the fibres out of the material. If we let the machine continue to rotate and press even harder, the insulation material starts to give smoke signals!

Different with the PAROLI^® 100 insulation hole saws!

The FAMAG PAROLI^® 100 insulation hole saw consists of a particularly thin-walled metal pipe. At the top we welded a cover on, in which a very special adapter finds its place. At the other end – the cutting area – this hole saw has a bi-metal weld which we provide with a very special serrated edge. You know this serrated edge from your bread knife. The geometry is amazing similar, but ground on both sides. Like a bread knife this hole saw cuts much more than it tries to remove material from the insulation board. With this trick and the effective length of more than 100 mm of the PAROLI^® insulation hole saw, you are able to cut excellent clean also in insulation boards with a thickness up to 100 mm.

For the use of this hole saw you need the actual PAROLI^® 100 insulation hole saw in the desired diameter and a PUMPSHANK^® in the long version (Art.-No. 2155.605). Slip the insulation hole saw on the ejector shank, which thus becomes the shank of the tool. Its hexagon prevents twisting in the machine chuck of your battery machine. As the insulating materials are relatively soft, you do not need any centre drill for locating the hole saw. Put the cutting edges of your hole saw on the insulation board and start your battery machine.

Do not push too hard on the machine in processing. Due to the low wall thickness of the hole saw and the fact that this saw is cutting like a bread knife instead of removing the material, friction occurs between the hole saw and the insulation material. Let the hole saw cut smoothly. Please pay attention, that you do not come in contact with hard masonry on the outlet side of the insulating material. That would mean the breakdown for the tool. If possible, place another insulation board underneath, which will lead to the best results. After finishing your job, the drill core is in the hole saw. And here we go: Touch the small press stud at the adapter of the hole saw and shift the hole saw over the shank in direction of your machine. With this trick you can easily eject the drill core. For some insulation materials this requires a bit of force and patience. But the result is perfect: The drill core has an impeccable surface. You can e.g. use it to close the injection opening in a thermal insulation again. For this job, we manufacture the extra diameter of 106,5 which fits for some standard injection nozzles. Six different individual diameters are available for the most important assembly parts like wall sockets, facade dowels, injection nozzles and fire protection halogen lamps. In addition to wood fibre insulation boards, you can also use these hole saws in mineral wood, PUR foam, Styrofoam, leather, rubber, paper and carpet.

According to our knowledge, the PAROLI^® 100 insulation hole saw is the only hole saw with which you can produce reliable, comfortable and extremely dimensionally accurate cuts in wood fibre insulation boards. Due to the serrated edge on both sides of the cutting edges an extremely thin-walled and exact cut is produced. The resulting cores can still be used! This special hole saw is manufactured in Remscheid and therefore a real “Made in Germany“ tool. Due to its uniqe selling points this tool belongs in any case to the DELTA-F family of FAMAG

• the first hole saw that really cuts all insulating materials thanks to its special cutting geometry
• fast, very clean and circular cuts in ambitious materials such as hard wood fibre building board
• the saw core can be removed very fast by the ejector system
• due to the thin-walled cutting edges of the saw, the saw core is best suited for closing the hole

Overview of the most important details:

Six different individual diameters are available. Please order the ejector shaft separately as it is not included in the scope of delivery.

Alternatives to this tool? We do not know them. If you discover one, we look forward to your message.