I think your JCB router could be a bit on the heavy side if it’s the 1/2" one.
I work similar to Mr Sauntson regarding homing first, at the end of the gcode I have the Z raise to a safe height by altering the end of gcode for all jobs.
I am hoping to get my LCD delivered tomorrow so will try your methods out, plus also try and wire up a Z endstop plus either a relay or tplink wireless control of the router.
Bill - this is the Router I have borrowed for my initial tests- it seems to move around ok - but is extremely noisy - so will have to consider either an enclosure, a quieter alternative plus maybe ear protectors as my next step!
Check that the coupling is tight.
Does it do it with the router removed.
Loosed the leadscrew nut attachment screws, run it up and down.
When it is at the top slightly tighten just two of the screws, if still making a noise loosed those two screws and tighten the other two.
If it is still clicking take the stepper off and move it up and down by hand, any tight spots.
Check all bearings are moving on the Z assembly.
It may clear itself in time.
Z axis clicking is usually found to be an interferrence between the tool mount and the Z| axis, I came across this while designing my vacuum shoe. To test, move the Z axis using RH until you hear the click, then look closely for any interference. it takes a while but hopefully a sucessful exercise
Thanks both will try those things. It sounds like it is coming from lower than the coupling - but it did only come with 2 grub screws so I guess it could be that - another one on order.
Will run some up/down speed tests to recreate the problem then try out the various things suggested.
Noise control stage 1. Some improvement - especially in other parts of the house. More layers required to really cut down on the noise. Also a good interim dust control problem until I sort out some vacuum extraction.
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Next problem is that I just got my first Communication timeout - printer reset detected. So will try moving the spindle cable away from the Arduino and if that failes will try the MKS board next or try shielding the stepper cables.
built a 3d printer during the summer and it has been a great learning experience printing pretty successfully now (I’m whispering that just in case my printer hears!)
Now have the overwhelming desire to build a mpcnc.
have ordered a bundle from V1 engineering shop in the states, I’ve ordered
Yes it was me who bought Screwfix conduit - but found the size to be too irregular - so went for Metal Mania which I am very pleased with. For me the overall cost was about double - about £60 for enough for a 300x300 build area.
After reading this thread, Dave changed his mind and went for SS tubing as the conduit he got from Screwfix was inconsistent with the galvanised layer. I pointed him towards the similar tubing to what I used.
You dont really need to have endstops on a CNC machine. Then you have the flexibility of placing the Bit tip in a position of your choosing. I would also make sure you have plenty of experience with 3d printing. This will aid you with building a CNC…
Thanks BillW, Dave, and S Saunton for your advise I need it!
I’ve taken a look at the metal mania site, think I’m taken in by that shiny metal already.
Also will try the build without end stops to start with.
Got notification bundle from V1 is on it’s way, so better start printing, hmmm what colour shall I go with??? might look a bit odd in the sparkly silver I’ve been printing Christmas decorations in for the wife.
Paul, I’m the wrong one to comment on colour, my wife has corrected me many times on non matching clothing but I think sparkly silver would look good, maybe throw some dark gray in to look like carbon fiber “I’ve got a silver machine” (Hawkwind)
I’ve got some red left so printing test parts for now mainly to check dimensions, not sure they are going to look at smooth as yours though… nice printing.