my first plasma build

[Web Goblin]

Adam,
I'm not quite sure what you have in mind for the chain drive but will see when you get some more photos posted.
Be careful of how much tension you put on the side bearings. They should only really be just touching the rail to keep the gantry straight. If you tighten then up too much then you could smash the bearing or jam the machine when it tries to travel. This could happen because of the chain twin drive system. If both of the chains do not move exactly at the same time and speed then the gantry will slew.
How accurate are you hoping your production parts will be?

I off to have a cry now. just came in from the new workshop that I am trying to get all my kit back into. I have stored all my stuff in the shed and just found my meddings drill head covered in water, ice and loads of rust. A length of flat bar had gone through the side of the roof vent and allowed water to run down it right into the drill head. A simple refit job has now turned into a restoration project.

Regards

Ian

[oadamo]

Adam,
I'm not quite sure what you have in mind for the chain drive but will see when you get some more photos posted.
Be careful of how much tension you put on the side bearings. They should only really be just touching the rail to keep the gantry straight. If you tighten then up too much then you could smash the bearing or jam the machine when it tries to travel. This could happen because of the chain twin drive system. If both of the chains do not move exactly at the same time and speed then the gantry will slew.
How accurate are you hoping your production parts will be?

I off to have a cry now. just came in from the new workshop that I am trying to get all my kit back into. I have stored all my stuff in the shed and just found my meddings drill head covered in water, ice and loads of rust. A length of flat bar had gone through the side of the roof vent and allowed water to run down it right into the drill head. A simple refit job has now turned into a restoration project.

Regards

Ian

dont laugh heres a quick pic i done in paint, do you think i will have probs with the chain like this. most ive seen have a loop on the gantry for the chain to run around but i havent seen many with chains on to have a good look.
my dads sheds like a shower in there when it rains, i have a box of about 40 bearing and they all got wet :cry: but most was in plastic packets in there boxes so there ok.
adam

[oadamo]

just seen this on the tube i think i might have a go at doing the chain like this it seems nice and easy.


http://www.youtube.com/watch?v=x-tDJAon3Ag&NR=1

[Web Goblin]

I see what you have in mind now. You will need to watch the chain tension and lengths to avoid the machine going askew. I look forward to some photos.
I also need to get my cnc router build project off the drawing board as well.

Ian

[oadamo]

I see what you have in mind now. You will need to watch the chain tension and lengths to avoid the machine going askew. I look forward to some photos.
I also need to get my cnc router build project off the drawing board as well.

Ian

to be honest i havent a clue what is going to work and what wont with the chain drive, but even if it cuts within 5mm i will be happy knowing that i got it working then after that i can upgrade all the bits and make it better.
iam going down tomorrow to do a bit more on it so i will take some photos in the day light.
adam