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Member postings for Martin Brundell

Here is a list of all the postings Martin Brundell has made in our forums. Click on a thread name to jump to the thread.

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Thread: Cross slide lifts when parting off
02/05/2011 17:56:51
The steel I am using is EN1A feee cutting leaded steel at 20mm diameter. Speed at approx 120 rpm and using the finest feed "C" on my machine. When it does cut it does it lovely but I really think the movement is bodging it up most of the time.
 
I agree I should not need to change the gibs or saddle fixings, but I have tried adjusting until I am blue in the face
02/05/2011 17:52:54


Posted by JasonB on 02/05/2011 17:14:53:
Hi Jason, I have adjusted the gib screws but still no go. I am cutting off from the front and left hand side as I stand looking at the lathe. When cutting you can pysically see the toolpost dipping forwards. I have checked the toolpost etc an that is solid with no movement - however you can see the cross-slide lifting on the right side (were the gib is) I am using cutting fluid with a pump. The tool is spot on centre on the work piece, but when the post dips it makes the tool go lower than centre and then dig.
Cutting with a HSS blade that is very sharp - but also have a carbine insert system, but this does exactly the same.
I will try tightening the apron tomorrow but at the end of the day the cross-slide if definitely lifting.
02/05/2011 15:45:26
Hi John thanks for the reply and will ring Arc Euro tomorrow about the gibs
 
However a bit lost with the sadlle info you have mentioned... bit new to lathes. I am trying to look for info now.
 
thanks
 
02/05/2011 15:38:25
Posted by maurice bennie on 02/05/2011 14:37:57:
Hi Martin. Have you checked that the carriage is not lifting.
best wishes Maurice.
 
 
 
Hi, I can actually see the top slide moving up and down. But how exactly can I tighten up the main carraige as well?

thanks

02/05/2011 13:39:56
Hi, I have a problem with the cross-slide lifting when Im parting off Mild Steel (EN1A free cutting).
 
I have tightened and aligned the adjuster at the side so that it's almost to tight to move the cross-slide - but it still lifts!
 
How can I stop this?
 
thanks
 
PS WM280VF lathe
Thread: WM280VF Fixed steady
27/04/2011 10:12:48
Got the lathe second hand and the fixed steady was lost by the previous owner.
 
It's not a warco lathe. However I think it is the same model with different paint and tbh I find warco to be VERY expensive for spares - hence asking if there is any other compatible steadies for that model. I will try them though.
 
Thanks for the reply
Steve
Thread: Indexable toolholder grinding/milling/shaping
27/04/2011 10:09:11
Great - thanks for the advice - much appreciated
 
Steve
Thread: WM280VF Fixed steady
27/04/2011 07:31:10
Looking for a fixed steady for my wm280VF lathe - does anyone know of any compatible types/styles? Most be able to take 40mm tube.
 
Also does anyone know of any mods to use a bearing type roller on the fixed steady as I will be mailnly using it for aluminium tube (dont want it gouge)
 
thanks
Steve
Thread: Indexable toolholder grinding/milling/shaping
27/04/2011 07:26:05
Hi, I have stumbled onto an almost limitless supply of free WNMG 0604 carbide tooling inserts for lathe turning - however I only have 14mm height on my toolpost. I was going to buy a wnmg toolholder so that I could use the wnmg tips but the smallest toolholder I can find has a 16mm height.
 
Question: Can the 16mm toolholder be millled/ground down by 2mm to accomadate my toolpost? I have a wm280VF lathe and dont really do any heavy turning (mostly delrin and aluminium) so the loss of 2mm won't really a factor in loss of tool stability/rigidity. e.g. I use 12mm toolholders now with no problem.
 
It would be a shame to pass up free indexable tips.
 
thanks
Steve
<< First < Prev 1 2
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