Hurrying has become expensive for me
 

I'm creating my own shopping list based on reading all the forum posts, and comparing all the different builds. It's caused me to think a lot harder about what I'm doing. I've probably already made mistakes by not buying ground tool steel for my z-slide(they didn't have the right size), and after rereading Gerald's posts, I'm now regretting buying pre-made rails instead of grinding my own or having them machined.

I think what I've learned most is to take your time, think twice, buy once, and not go off plan unless you have a real good reason. I'm more than happy to share my list, even though it's not yet complete, if anybody wants to take a shortcut. No guarantees these parts will work for your build.

Thanks krasch
 

Thanks krasch,, I think I was very misunderstood due to lack of technicality in speech.. I really not in a hurry to build the entire machine ,, just excited to start as I am many things.. To include building my own inground pool outback.. kinda technical but really not that hard.. I read this site every night when I get in.. I would be very interested in your table size as well as your parts bought.. I am not well versed in the area of steel.. All we have ever needed was enough to support over windows and garage doors for brick. It was interesting you brought up the rails that is an area I have been studying alot lately. I to thought of finding a rail that was already perfect in deminsion.. but after alot of thought and watching the video posted,, decieded to grind my own.. So it sounds like I am on the right path in that area.. we have alot of machine shops in this area.. but I still got my parts from joe due to this forum and many reviews to their correctness they all arrived in very good shape.. Have you bought your motors yet ?? did you use the 250$ ones or the lesser... I am still gathering the 1700$ to get all the electronics together.. Have you started a build thread yet? I will check after posting this.. I bounce all over this site and probly miss alot of stuff. I try to watch johns as much as possiable as well as a few others.. I have not started my build yet just the collection of goods.. Largely because my shop is in need of being put back together after our move.. Which is where I should be right now but this site is addictive as you know.. Thanks again Dennis

Hey Dennis,

Glad to hear you're making progress on your MM.:)

Building YOUR OWN IN-GROUND POOL! WOW, that's a project I've often thought about, but never attempted. Is it poured walls, gunite, insert or what?

If the John you're referring to is me, I'm working on the table now and will have an update in a few days...something about posting "pictures" of my mess.:D

Regards,
John

Hi Dennis,
I ordered all the electronics, and yes those O.M. motors are expensive, but It seems like you need them to get the router to zip along at 100feet/sec. :) I found a friend who is an Electrical Engineer to help me assemble everything correctly so I don't electrocute myself. This site is addictive, and reading about everybody's build is probably the best way to figure out what parts you need and how to build what you want. My machine will only have a 3'x4' cutting area(I've started a build thread), but that's all I can fit in my apartment.

Here is a copy of my bill of materials for a small form MM. It's still a work in progress, but maybe it will inspire others to post theirs, with links to the best supplier's.

thanks krasch and john
 

Thanks for posting your b.o.m I'm going to use the same motors and electronics... That is were I'll need most if not all my help the electronic area.. It was pretty easy to buy a cnc already together but I didn't learn a thing about what is inside the thing.. I shall keep an eye on your guys that are well educated in that field.. And yes john your thread is one I have subscribe to I watch it daily to look for any action. So no more vacations..Just kidding.. Looks to me as if you are moving well.. I was impressed by the job the makida did.. As I watch I try to think of additional methods that would produce similar results.. I saw a blade on cool tools(diy network) that was billed to cut anything.. called a evolution.. I am going to look it up when I am done reading tonight.. As for the pool I have watched sevaral install in person. Mainly fiberglass and vinyl liner.. I though the fiberglass was by far an easier install..I am looking at a kit that involves sips panels.. They snap together after excavation and require a little backfilling then you roll a coat of plaster material they provide.. then a elastic type material sprayed or rolled good to -40 degrees .. third coat of plaster and your home free... Except tile and concrete work which is not real difficult.. Its more for my wife than me.. We have a 7 acre lake outback which would do me fine.. She said she needs to see what shes swimming with.. I told her we don't have piranna this far north but that did'nt matter... anyway got to go bounce in on your thread see what your up to see ya Dennis

Two transformers ?
 

Krasch,

Thanks for posting your BOM. I've been reading through the site for two months now and you are the only one who is gonna make an elf MM (Can the BBB be an elf:D:D). Your table size is quite interesting as i need to have almost the same size due to the space problem. I've noticed that in your BOM you included two transformers
1. PS-4Nxx. antek
2. AVEL Y236801 (25V + 25V)

may i ask why ?

Also i think the best choice from Antek would be PS-5N56R5R12 (3 outputs 56Vdc 9A- 17Vdc 1A -12Vdc 1A) which i think is enough to power the components of the control box.
I will be useing the same OM and PMDX-122 you use and I've chosen that transformer to complete the combination. Maybe the experts can give us a hint about it.
I'll be following your thread carefully and wish you all the luck.

Dennis,

The "Evolution" you mentioned sparked a memory. Here's a quote:

If you want to check out this discussion, just put "evolultion" in the Forum Search and check the "Post" option.

Regarding the pool, seems like a spring or summer project in your area. By the way, I've got some experience laying flat limestone in my back yard (plentiful in my area of Texas). I think flagstone is plentiful in your area. If you're going with flagstone, I could provide some pointers.

Regards,
John

Sorry the 3 outputs are (56Vdc 9A- 5Vdc 1A - 12Vdc 1A)

Ahmed- Power supplies are the subject of quite a bit of debate on the forum, and there doesn't appear to be one standard. I read (from Gerald I think) that you don't want to go much over 38-42v or you might fry your motors, and that 300w was all the wattage you needed. From my experience building PC's, more wattage isn't necessarily better. Your post is the first I've read about needing 3 outputs. I copied the following specs from another Forum member to give to Antek:

Input: 110VAC
Output1: 38VDC 380VA
Output2: 12VDC 12VA
Total VA: 392 (PS-4N38 with second 12VDC 1amp output)

I believe the PS-4N42R12 fits those specs. If I've screwed up, my friend doing the electronics will help me sort it out. My first objective is just to get the motors to spin for the kitchen project, and I needed some kind of PS to get there. I'll probably fall off my bar stool if it actually works. For $120, I'm going to have an experience. I'll follow up in my build thread.

oops! sorry Ahmed, forgot to answer your question. I copied the AVEL and the Antek from other threads, and didn't realize I was duplicating things. Thanks for the heads up, I'll delete the AVEL from my purchase list.

I have a PS-4N48R12 (not listed on the Antek site.). This based on my reading around the OM A2A motors was going to be closer to getting the best torqe to speed curve. But I am still collecting parts at this point. I have most of my control box pieces but can't get a moment to swing by Joe's and get some wire :)