Britguy

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  1. Wow, thats quite different. I dont plan moving my hammer when its settled, so thats not a concern for me, but I do understand your logic. I cant understand why/how it doesnt break the 8" concrete up though! It all sounds too cumbersome for my taste, but each to his or her own. Also, i'm sure it would still rattle the existing foundation slab (in my shop anyway). And your movable slab is a mere 0.6 cubic meters, which isnt a lot of mass when compared to a deep isolation pad design, which might be around 2 or more cube. Not only that, I'd probably trip over the darn thing and end up with my head in the hammer! :-)
  2. Judson, I do, so I wont, but thank you anyway. I'm guessing from their website, that they will be horrendous in cost. I have to be practical here, and, as I said, I will try to be "reasonable" about it if I can. I'm sure there must be cheaper options out there for those of us who don't have bottomless pockets. I'm even thinking if the pad is deep enough, and has enough mass, then that must surely help a lot. I would have thought that isolating it from the slab and walls is one of the most effective first solutions. However, Im no expert, hence my enquiry. But, if it comes to having to spend $$$$$$$$$$ then its not going to happen. One thing I might have to consider, is a high water table. Sump hole or something.
  3. I'm actually not in the UK. I'm in New Zealand (Ex Pat). The 75kg is very much a long shot (a long story), but more likely possibility is a 44kg. Either way, Im aware that it will upset the neighbouring property owners. They are not the nicest of people. To give you an example, he has a personal car numberplate that says something similar to AGGRESSIVE (I wont divulge what it actually is) The previous occupiers were just lovely, a dear old couple who have since passed away, and who wouldnt have had any issues I'm sure. Anyway, I'm not looking to bend over backwards to appease them, but, just to be reasonable. That to me means not making noise too late or too early of a day. But, also any constant noise could be considered a nuisance. I have already spoken with the local authority, and they say that usually, its above 50 decibels, obviously not at source, but at the complainants dwelling or property. Now I'm sure the hammer would not create this, but, Im thinking a dull thud thud thud through the ground would be annoying to anyone, and in that sense I want to be a reasonable guy and try to eliminate as much as I practically can. I'm also only looking to operate the hammer during usual business hours, and my neighbours both work, so in that sense there wouldnt be any issue at all. However, they do sometimes seem to work odd hours, and the man has taken to coming home early afternoon. He once told me he starts very early, before 5am, but likes to come home and sleep in the afternoon some days. This could potentially be a problem, but, if I can do everything possible, it shouldn't be MY problem. We all have to live and work, and, if I was to run heavy farm machinery, a wood shop or motor shop, Im sure I would make much more noise! Being as we are a rural smallholding, we are entitled to work the land, and have heavy machinery working. One of our neighbours runs his earth moving business from his property, and has HUGE plant and equipment moving on and off all the time. No issues! Again, if I take the time to do this right, and to show that I have done my best to eliminate the noise problem, making significant difference, then I cant see a problem. Hence my initial enquiry. I am informed that the smaller hammer doesn't require special foundations, but, it sure would make a difference as far as vibrations are concerned. It can only be a good thing to eliminate this, for both the neighbours and myself, and workshop foundation which is 6" concrete. This is all for an exercise in what is possible for now, as I have neither hammer as yet, and no concrete idea on which I might be getting. But, before I do, I have to try and have an informed best guess at what I could achieve given the right approach. I also realise that, it wont be truely apparent, the noise and vibration levels that is, until its up and running, and the neighbour hears it. All very exciting huh! But given they cant stand a radio playing in my closed workshop, as the BASE annoys them, I can see a few fights looming over the horizon, no matter how much I try to do. As for the hydraulic press idea, yeah, Im building one right now, but it cant exactly do what a hammer can do, and vice versa, and I don't like limiting myself in my own workshop. Its good to be reasonable, but beyond that, sorry, go take a hike!
  4. I’m considering a 75kg Anyang power hammer for my shop. I know there are so many threads on here which talk about foundations and isolation pads, but there are so many variables, it seems impossible to have a one fits all solution. The Anyang is a one piece unit, which I would think is a bit more forgiving than having a seperate anvil, but then I’m not sure! We are very rural, but I have one neighbouring property, which is only about 50 meters away from the workshop. The couple who live there are not very forgiving about noise. Any noise. Last week whilst I was working in the shop, the guy shouted over and asked me if I could turn the radio down, as they could hear it in their house! Okay, it has a good base sound, but even so, he must have ears like a fruit bat. I obliged, but at the same time, I pondered my decision that is to have a power hammer within the coming year!!! The only option I can think of, other than having them “run out of town”, is to have a good isolation pad beneath the hammer. I realise that it will still be heard, but if I can at least stop the vibrations being transmitted through the ground, I’m sure I can argue the rest, as hell, we are on a rural 10 acre property, and we could be running heavy farm equipment if we so should wish. So, without having to sell a kidney to pay for design of a isolation pad, would any of you fine fellows know where I might get some good ballpark advice about what might be a sufficient type/mass of pad to be aiming for? I realise that when I dig out, I might need a water pump if the groundwater table is high, or, to pump out any ingress of water between the pad and the wall etc. But also a decent idea of how big this thing needs to be would be a great start. The 75kg is only a possibility, else I could even go with a 44kg hammer. I know the 44 doesnt need anything other than to sit on a standard workshop floor, but then I know ill have the same issue with the darn neighbours. So, ill have to try and isolate in any case I guess. A friend of mine runs a 15kg hammer, and his neighbours (who don’t mind) can hear it working, and they are maybe 80 mtrs away. That said, his is just sitting straight on the slab floor. Thanks in advance guys.