Hello guys I got my mr1 this weekend I hope I can post some good pictures on my build I have a friend who’s helping me build this due to I could not wait for a fully assembled mr1
This is going to be a long road because I do not know what I am doing but I’m willing to learn
Day one of this long journey with my hubby mill I am glad to open the box without any damage parts like I have seen on The forum
My machine is in orginal form. If I was to do it over again installing a drain system like yours would be it. The standard drains work but, a total pain in the a$5. Glad you almost up and running.
It’s just a rough measurement at this stage before the concrete goes in- Once the concrete is in it will be extremely stable (when it matters).
We’ve got a machine here running for 3 years every day (cast iron and steel mostly)- the concrete is perfectly intact. The reason that we do not advise mechanically bonding the concrete to the tray is because if one of the legs were to be bumped, it puts a load through the concrete which may cause it to crack
One other thing to keep in mind, the more ‘stuff’ there is in the concrete, the less concrete there is. Stiffness and mass damping of the base are what give MR-1 its performance.
I would have to disagree with you on this for the simple reason is I have poured hundreds of car Parks hundreds of walls and car park suffer when vibration allows the steel pond to move so vibration of any form will separate a a surface that is non-porous does not have the quality of a porous surface to bond to concrete was my life for over 40 years also what you have to look at is there are many forms of concrete from small pee aggregate to large pee aggregate there are fiberglass infused concrete known as Kitty hair that pump grouts and various other forms of concrete out there this is the most basic form of concrete being used in here which means it does not have all of the bonding qualities that you would get from a kitty hair concrete mix of 4,000 plus PSI
I did a small video to show how this thing works and I cannot post it directly on the forum I think I have to go through YouTube and put the link so you can see how well it works the large drain has a 2-in outlet which I’m going to cover with 100 micron filter this should keep all of the debris out of the pump but this is the way that I did it but there may be better ways to do this but this is what we have for now I will be looking forward to help from members on the forum when I get this thing up and running
Sounds great. No worries. We will assist you in making a chip mess. 
I put that same drain in the back of mine, you won’t regret the extra work to make it fit.
