Recent content by joco-nz

Lead screw is 3mm pitch. had a look at the gears for the dial and they look to be Mod 1. That is based on a visual inspection against the "to scale" profile pics in the "little black book" and by checking the measurement of the pitch on the gear. An imperial 32 pitch looks to be too be a...

Thomas - I sold the AL320 a while ago and replaced it with a larger and more capable AL346V. Its still a metric leadscrew lathe but I have not had to work out what pitch etc as it has a thread dial chart already on the machine along with the quick change gear box. After work today I will have...

Been working on a little clapper clamping block for this tool holder. I don't have any way to lock the clapper without taking to it with a drill press, which I am not to keen on. So with this Armstrong style tool I deliberately made the shaft long enough that when using the slotting bar I...

Cheers Kerrin. Now on to the slotting attachment. Pretty self explanitary from the plans. Nice long M16 bolt (150mm long from memory). Made the two holes 85mm between centres and turned down the bolt head to give a little extra length for the tool bit clamp screw to go into. Said clamping...

After getting the little Alba 1A spruced up and working I decided to have a crack at making a tool holder that is based on the Armstong style. To be clear this is NOT my design. I have included the pic of the plan for reference which I believe to be in the public domain (i.e. not sold). From...

lol - yup. Know that feeling! I suffer from decimal point envy. When I see 0.1 I'll start mucking about to get 0.01 etc. You can see where this is going. ;-)

Ok - got home a bit earlier than expected so did some test cuts for measurement. Given the vice is not very good and getting metal to sit in flat in it is a bit of a fight I think measurements of within 6 tenths isn't too bad. That would be about 0.015mm I think. Once I get a better vice and...

No workshop time for the next two days. But I’ll do some measurement checks when after that and post what I find.

This should really be the last on this topic. Anything else will be net new content and I will post on a new thread. This is a little video showing how I set the stroke length and ram position on the Alba. I then do what are probably my second ever set of cuts on this machine. Cheers - James.

Right the leveling feet are done and installed. I have some photos and will describe the key dimensions and parts. Pic 1: The main parts. We have (a) an ice hockey puck. These are around 75mm OD and about 25mm thick. The hollow that has been bored out is 49.8mm diameter and 11.5mm deep. I...

Finished. A a fully assemebled and working shaper. The only thing to complete now is some leveling feet. I'll keep a track of progress and design on those and post here. In the mean time here is my little youtube vid showing the fully functional shaper.

Just a little video of the travel:

Finally finished the leadscrew nut today. After a test fit I discovered there was no value to be gained by rounding the end over like the original. I suspect that was done on the original casting to save material. It is not needed for clearance. Pics attached ... #1 to #4 show the initial...

More progress on constructing the replacement horizontal leadscrew nut. Pics 1 and 2 show the prep work on the cast iron round into a rectangle of suitable size. I then drilled a couple of reference points to support setup in the mill. Pic 3 shows setting up the offset using an alignment bar...

Update on the acme threading - I had another look at the pics and thought I should clarify the topslide (compounds) position that can be seen. It is CLEARLY not set at the proper angle and that is for a reason, it wasn't used. I treated this more as a forming operation and just controlled the...