Building My First CNC Router, Looking for Advice & Other Info

[Desertboy]

If you have to send the extrusion I would google and find a supplier closer to you they will almost certainly be able to cut and drill the same as KJN but without the cost of sending the extrusion. I thought you would buy the extrusion from KJN not already have it. I'm lucky I live down the road from them so it was easy to get everything sorted.

Country has many extrusion providers I would look for somewhere you can drive to to drop off otherwise it will be expensive with postage.

KJN are in Leicester, I am very happy with the quality of their work. BUT make sure you have everything specified first correctly because it will be expensive to correct later! I had an issue but I sorted it if I didn't live 5 mins down the road it would have been a big problem.

Click my sig, the budget went up a lot lol from when it started but we're getting there and I ditched the supported rail and belt drive for Hiwin's and ballscrews so was going to cost lol.

Any supplier of this extrusion will be able to cut, drill, counterbore and tap.

If you do want to send via post try myparceldelivery.com you can send 30kg's for just over a £10

[AlexDoran]

Apologies, i have not bought it yet! Just what i planned to use. Your build looks like its progressing well, i was looking to pay nearly £700 for the ballscrews but my guy in China is doing them & the supports, mounts etc for $217 delivered!

Where do you get your fixings / bolts from? I commonly use ACCU Group, hundred of sizes, heads types and relatively cheap, annoying sometimes as some sizes / lengths have a minimum order Quantity, but they do usually turn up next day so its handy.

Thanks

Alex

[Desertboy]

Apologies, i have not bought it yet! Just what i planned to use. Your build looks like its progressing well, i was looking to pay nearly £700 for the ballscrews but my guy in China is doing them & the supports, mounts etc for $217 delivered!

Where do you get your fixings / bolts from? I commonly use ACCU Group, hundred of sizes, heads types and relatively cheap, annoying sometimes as some sizes / lengths have a minimum order Quantity, but they do usually turn up next day so its handy.

Thanks

Alex

I recovered a lot of fixings but I had to buy weird lengths so I used ebay.

When I finally finish the router and stop bleeding money I will make an order from alixpress getting a feel for the bolt sizes going to want. Already planning the next router lol but I also want to build a positive pressure vac former. I also toyed with a co2 laser cutter but need to be comfortable with the router first lol.

[AlexDoran]

Just placed the order from China for my Ballscrews, Nuts, Supports, Mounting Brackets & Couplers. Total Price: £169.70

Delivery by FedEx so i hope they will be here next week or early week after. If anyone is interested in the store i got them from i used the Link CNC Store

If you make a list a send him (Mr Shu) a message he will quote you a good price, cheaper than what his parts are listed as.

Thanks

Alex

[AlexDoran]

Ok so i had a reply from the seller on ebay regarding the spindle and he has said to me that the spindle on has 3 bearings - the one he sells with 4 bearings is considerably more expensive. Does 4 bearings over 3 hold much of a difference in terms of robustness or would the 3 bearing suffice for my needs - can the bearings be changed in the future if they were to deteriorate.

Thanks

Alex

[AlexDoran]

So my Ballscrews were dispatched from China last Thursday and arrived yesterday, upon first glance they look to be pretty decent (for £170 delivered!), none seem to be particulary bent compared to what i have seen in some threads / videos, the RM2010 screws seem to be slightly stiff but im hoping this will clear up once they are greased / run for a while.

Ballnuts, supports etc look pretty cheap but will do the job just fine.

Ordered the extrusion which should also be here this week and also all of the fixings.

3D Printing the aluminium parts to do a dry assemble, still waiting to hear back prices for the aluminium plates but wont order anything until i have assembled it using the plastic parts to check everything fits properly.

Alex

[AlexDoran]

Hi everyone,

The build is progressing slowly, mainly just waiting for parcels to arrive, i now have the extrusion and all of the bolts / fixings. I am struggling to figure out what my PSU requirements are, i was wondering if someone might be able to offer some advice?

I am using 4nm Nema 23's, and using Leadshine AM882 drivers from China.

This is the datasheet for the Motors i have:

PDF

Link for the stepper drivers:

AM882

Am i right in thinking that to get the most from the motors and drivers that i am going to need a 68 - 80v PSU? What amperage rating will it need to be? 20A+?


Again any help would be greatly appreciated, thanks.

Alex