Search:

If the parts are made as rigid as they should be the weight will be centred even if the vertical plate carrying it is not.

I thought that most of the cooling came from that high volume of air going through it? Comes out of mine fairly warm, anyway. Not a lot of scope for cooling apart from that, especially in a...

Generally, use the smallest diameter screw that will do the job. In this case, doing the kind of back of envelope sanity check I like to do:

Target max Z speed = 2000mm/min. You probably don't...

For a Z axis it's more about holding force over speed. The shallower pitch will almost certainly deliver as much Z speed as you need whilst requiring less holding torque.

9.81 Newtons equates to 1Kg Force,

link to spec to save anyone else searching for it -

https://www.hiwin.de/en/Products/Linear_Guideways/Series_MG/Block_MGN/21089/148411

1Kg is a bag of...

Zapp Automation make their gantry machine from 5083 tooling plate.

Link: Zapp gantry machine

You can also buy the tooling plate from there. That's what I am using for my gantry sides & z-axis....

Thanks for talking the time to post the fixing procedure and the parts you use.

kerosene (28 Sec) is readily available all year long if you ring a fuel supplier I used to run my steam cleaning machine on it it's was cheaper than red.

I remember you could buy it in B&Q for £4...

I stopped using mine own mixture or soluble oil. Now i use pure kerosene/ or paraffin you call it/, the one for the stoves they sell in 10 and 20l bottles. And right now is the time to buy, as in...

By hand gets super complicated super fast when considering more complex shapes and even more so when you are talking complex shapes with complex assemblies... That said always good to have a rough...

If you want to work it out by hand it is not too tricky for a simple shape like that.

1. The geometry of the part (how the material is arranged, into what shape). This is the cross section...

A better answer indeed, but an answer to a different question.

The better A. is that it depends.

By mass the alu is 3x less rigid - and importantly it likes to ring and vibrate.
But when you get the same mass in alu, it is thicker, and thickness scales pwr 3...

Seems people have got on fine with Noulei from what I've seen... it'll still be an order of magnitude better than round rail either way. Some good sellers on Aliexpress (I've bought HIWIN there...

https://www.ebay.co.uk/itm/15-1500mm-2x-Linear-Guideway-Rail-4x-Square-Type-Bearing-Block-Machinery-Unique/173014800117?_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D1%26asc%3D49568%26meid%3D5d1ba68f...

Just out of interest, took your dimensions and applied a load of 200N to mild steel and 6061 alu:


23425


23426


10mm Steel deflection = 0.06861 mm

Would depend on the aluminium alloy to some extent but Youngs modulus of steel is roughly 3x that of Aluminium.

There is not really a particularly significant difference in modulus between...

Regardless of what some people say I think you’re doing a grand job.

Rail Types


There are basically three type – Round Rail, Supported Round Rail and Profile Rail.


Round rail with closed bearings has pretty tight tolerance (little bearing play) but since the...

Hello All,

What follows is an attempt at a ‘sticky’ guide for beginners wanting to design a moving gantry CNC router / mill. I don’t consider myself an expert but I have been reading this forum...

used 4mm nylon elbows which were a push fit into the carriage

Unipolar/Bipolar Connections (2-Phase Motors)


Unipolar and Bipolar Half Coil, because we're using less turns, doesn't give us great low speed torque, but because of the low inductance, holds the...