As good as the finecuts on the 30XP were at least. 
That theory just doesn't seem to work with the 45 Tom, well I don't see it anywayacourtjester wrote:Here is a tutorial video about the arc shape that may help. They have many other tutorial videos dealing with plasma and other CNC operations too.
http://www.advancedrobotic.com/OoD2UnhbrIQ-video.html
Missed that one Dave, good stuff, might give those a try, have you tried them on mild steel yet?davek0974 wrote:30A consumables arrived today, gave them a spin on 1.2mm 304 stainless and got excellent results
Both pics as they came off the table...
Voltage was low as normal it seems, 76v instead of book 98v but speed was bang on at 4000mm/min, pierce height 2.5mm, cut height 0.5mm. Still need to dial the THC in as its a bit unstable on thin stuff but at least it works and the table is now producing paying work.
SeanP wrote:Missed that one Dave, good stuff, might give those a try, have you tried them on mild steel yet?davek0974 wrote:30A consumables arrived today, gave them a spin on 1.2mm 304 stainless and got excellent results
Both pics as they came off the table...
Voltage was low as normal it seems, 76v instead of book 98v but speed was bang on at 4000mm/min, pierce height 2.5mm, cut height 0.5mm. Still need to dial the THC in as its a bit unstable on thin stuff but at least it works and the table is now producing paying work.
Those edges look fairly square?
Same here, according to that theory, I am cutting way too high - my bevel is always wider at the top. Today I have made many test cuts, stopping mid-way and the torch is always close to the 1.5mm called for by the book. THC on or off, I always have a bevel.SeanP wrote:That theory just doesn't seem to work with the 45 Tom, well I don't see it anywayacourtjester wrote:Here is a tutorial video about the arc shape that may help. They have many other tutorial videos dealing with plasma and other CNC operations too.
http://www.advancedrobotic.com/OoD2UnhbrIQ-video.html
This is what I'm wondering as well. I put the set of 30A consumables together yesterday and it looks like the nozzle sticks straight out of the shield. I am confused if this is the correct way of putting them together. According to the book, yes, but it's got me thinking then I might have the incorrect shield.davek0974 wrote:But there is only one shield and one nozzle combination for mechanised cutting on a PM45??
The 30A ones have a completely different arrangement.
Thanks Dave. Exactly what I'm hoping for as I get some terrible cuts with 45A on 1.6mm mild steel. Got to try the 30A stuff this weekend and see how I go. Also I have the water table, so it should also make a huge difference.davek0974 wrote:It is flat - pretty certain the 30A consumables are unshielded i.e. the nozzle sticks out.
It does work though and are great for fine cutting, just don't last as long and easier to damage.
the cut feed rate was at 8100mm/min, thats quick to keep watching just in case 
That looks very nice. I plan on outsourcing this on my build too. Its about the only thing I plan on outsourcing but its hard to compete when the sheet metal companies have the tooling and expertise I could never hope to have. Do you have any more pictures of this from different perspectives or perhaps any drawings? I could sure use some to take to my local HVAC company. Cheers, Eddavek0974 wrote:Extract tray / chamber arrived today... Quality is excellent, glad i outsourced this part
Really, only 10 Kg including the motors and Z axis carriage and torch assembly? I am using 80/20 and a velox z carriage and I am concerned that I will end up with a complete gantry assembly weighing in at around 100 Lb.'s. Its mostly all Aluminum but still all the components collectively add up.davek0974 wrote:Thanks Tom, my fault for not being scientific
What I was trying to convey was that the overall effort needed to move the mass of the gantry and overcome the sliding friction appeared very low.
In reality I estimate it will weigh around 10kg or so, if I remember i will put it on the scales next time I have it off the table for an accurate assessment.
My Velox Z weighs in at just over 5.6 kg and add the nema23 stepper and it's up to 6.8 kgedclayton1 wrote:Really, only 10 Kg including the motors and Z axis carriage and torch assembly? I am using 80/20 and a velox z carriage and I am concerned that I will end up with a complete gantry assembly weighing in at around 100 Lb.'s. Its mostly all Aluminum but still all the components collectively add up.davek0974 wrote:Thanks Tom, my fault for not being scientific
What I was trying to convey was that the overall effort needed to move the mass of the gantry and overcome the sliding friction appeared very low.
In reality I estimate it will weigh around 10kg or so, if I remember i will put it on the scales next time I have it off the table for an accurate assessment.
I use this... SH-100A .Spendy as heck, but great air tools. e-bay is your friend here. keep looking until one shows up..SeanP wrote:Looks spot on Dave! Well done.
What do you find best for edge clean up inside the intricate bits?
Cheers
The back gets a quick hit with a fine disc on a 4" air angle grinder, then i run a fine file over the detail edges followed by hitting the front with a piece of brown scotch-brite, took about 5mins to finish this part.SeanP wrote:Looks spot on Dave! Well done.
What do you find best for edge clean up inside the intricate bits?
Cheers
