Gearbox pulley

I think I mentioned that the pullet came off the spindle a little quicker than I had anticipated and when it hit the motor, I noticed the pulley was cracked and chipped. Inspection revealed it was cracked before as the metal had rust in the crack. Anyway, I decided to braze the pulley and then skim it back to shape on the lathe. Below are two phots looking at either side of the pulley. You will notice that there is still a crack in the pulley but hopefully the braze will keep it all together.

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Worse case is that if it failes again, I will either make a new pulley or braze up the other portion.

Inverter

After a lot of thought, I decided the best way forward was to fit an inverter. I was lucky enought to get a new inverter at a sensible price – 240v single phase in , 415v 3 phase out. It is a 2HP model, so should match up well to the motor. (which is only a single voltage motor but twin speed).This should make life a little easier for me as far as wiring up is concerned. I may try and work out how to wire in an LED speed indicator…..

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It is currently with a friend who picked it up for me.

I’m not sure whether to mount a control box on the back of the machine or have the VFD mounted away from the machine. I’m a way off from having to worry about this yet.

A clean table

I vary the cleaning of the parts from using an aqueous alkaline degreaser to a solvent based one. I have yet to decide which is the better, however, when the sun is shining then I prefer to do the job outside and use the water based one! I use a fine scotchbrite pad when cleaning and this cleans off the dirt and any fine rust. Below is the table before cleaning.

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As you can see, it has come up reasonablty well. This is stage one and I will clean the top surface a bit more using the same techniques as I did on the apron slide.

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A close up reveals the damage to the top of the table. I’m not sure what to do here. I can either leave well alone or attempt some kind of repair. This needs careful thought. When I bought the mill, I never thought to remove the vise when inspecting the machine – this damage was completly covered by the vise and so I did not see it!

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The oilo traps at the ends of the table were painted as I can see residue of paint. I need to establish if the side channels were painted as well. The screw threads on the drain holes need a good scrape as well!

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Next stage will be to clean up the tilting mechanism, clean up the meatal a little more and then mask up for spraying.

Below are a few items ready for paint

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Table masked up and painted

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Another view with the brackets etc.

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There isn’t much more painting to do for the F3 – just a little touch up here and there.