Member postings for Brian Rutherford

No need to send psu back. You need a dm860h or equivalent driver which will function perfectly with a 60 volt supply.These days about £40 each

These are the correct size for nema 34 steppers. I have 3 nema 34 motors running fine on my W18 size mill using these drivers. Take a look on the auction site for' longs motors'. Chinese as they all are but usually shipped from within U.K

6600 driver range are for nema 27 motors. Ok for X & Y axis bit under for Z but still okay

Edited By Brian Rutherford on 21/11/2022 18:27:06

Jason , just about any steel would have done. If they had told me the price when I ordered I would have gone elsewhere. Pity because rapid metals were always the cheapest supplier and better choice plus being local no postage either

Edited By Brian Rutherford on 08/04/2022 15:57:32

Hi

I ordered a block of en1a yesterday 3x2 x 1&1/4 from my local rapid metals.

Couldn't get a price over the phone as the chap wasn't at his computer "but don't worry it won't be a lot" was the reply.

Went to collect later to be told "that will be £18.00". I won't repeat what I said here . Ended up paying £13.80 which I think is well over priced

Before Covid you could have bought a piece of Brass that size for less

I used an old cutter to get through the surface then terminated the program. Then ran it again with a newish cutter. Cutter was a cheap one though. The other reason why I used hot rolled steel was I wanted the finished job like a casting which I will paint to match the machine.

Nigel I totally agree. I used it for cheapness. It's been a pig to machine but lesson learnt

Thanks Andrew, again running at 120 mm and 2000rpm full width of tool not much different to you. Step down is a lot less though

Thanks Andrew, again running at 120 mm and 2000rpm full width of tool not much different to you. Step down is a lot less though

Thanks Jason,

My top speed is only 2200rpm. Pro rata my feeds are not that much less than yours as it's a 2 flute drill. I used a circular toolpath so it doesn't have to cut all the material away. The plates are for mounting a water cooled spindle. The original motors are not designed for continual running flat out for long periods

Emgee, left 2 tabs save the lump falling into the cutter. I do have coolant but the tank is full of paraffin as I mostly cut aluminium. I think I might need to get a small amount of coolant for these occasions. Had no problems cutting steel in the past but mostly en1a. .

I cut the first semi circle out with spindle speed set at 2000rpm. The feed was 120 mm per min. Used compressed air to cool the cut. The tool is only cutting 50% of the time as half the circle is outside the cutting area. I ask the question because the machine really struggled . Depth of cut was only 0.5mm. I didn't care to go deeper or faster feed. Motor only goes to 2200rpm.

I cut the first semi circle out with spindle speed set at 2000rpm. The feed was 120 mm per min. Used compressed air to cool the cut. The tool is only cutting 50% of the time as half the circle is outside the cutting area. I ask the question because the machine really struggled . Depth of cut was only 0.5mm. I didn't care to go deeper or faster feed. Motor only goes to 2200rpm.

I have to cut two semi circles out of 15mm hot rolled steel plate on my toolco 32 mill (similar to WM 18). Semi circles are 30 and 40mm radius. My mill has been converted to cnc. I am using a circular toolpath and a 6mm carbide slot drill 2 flute cutter. What spindle speed and feed rate should I be using. It's tough stuff.

I have electric element underfloor heating in a bathroom floor. The element is in the floor set in the adhesive. With a second layer of adhesive over the top for the tiles as per manufacturers instructions. It takes at least 8 hours to feel any heat in the tiles. God knows how long to heat through a 50mm screed. The floor is meant to be permanently on. If you use a programmer it will be full on when timed on and at 80% when off.

If it fails then nothing you can do except change a thermostat. If electricity prices continue to rise I guarantee you will put another form of heating in there. Wet heating pipes differ in that they use a special conductive concrete screed which allows the heat through

Brian

Hi Steve

I have a 2 ton hoist which you are welcome to use. I am situated near J3 of the M6, so not too far from leicester.

I used it for hoisting my toolco vm 32 mill onto the work bench.

Brian

If you mean the flange is inside the nut then Yes it is there for a reason. I think you have just scrapped it. The collet clicks into it to retain the collet

If you mean the flange is inside the nut then Yes it is there for a reason. I think you have just scrapped it. The collet clicks into it to retain the collet

At one time their was a convention to put the flow on the top corner of the radiator and the return on the bottom diagonally opposite. Some thing to do with efficiency and thermal cycling as the cooling water will sink. I think it goes back to large bore pipe work and cast iron rads.

As to the tails being different lengths, the guy didn't bother as he wasn't fitting the rads.

By the way Iain the mill table weighs 42kgs. Weighed mine this afternoon.