The Craftmans Shop > New from Old
Rebirth of a 6 Foot Flail Mower
Pete W.:
It's all looking good and coming together well, Andrew.
Your projects make mine look so inadequate!! :doh: :doh: :doh:
That off-cut of tube looks to be worth saving - I'm sure it'll be useful some time in the future. :nrocks:
awemawson:
Thanks Pete for the kind words :thumbup:
I've a 5.5 metre long 'offcut' of that tube if you need a new gatepost :bugeye:
sparky961:
--- Quote from: awemawson on October 28, 2016, 05:22:37 AM ---For some reason the cut starts are starting on the wrong side of the line giving those little lead ins
--- End quote ---
Are you sure it's at the start of the cut? Hard to tell whether your outside profiles had the same problem as the inside ones.
With inside profiles especially if it's set to do any kind of lead-out at the end, it can result in a similar notch. What happens is that the slug falls out but the plasma is still on due to the lead-out settings. It has no choice but to complete the ground circuit through the part, thus burning away a section you'd rather be left there. Best settings for lead-out are nil, or better yet turn off about a 1/2 kerf width before the end of the profile.
Best lead-in is arguable and dependent on material thickness also. Perpendicular straight lead-in at least twice the size of the initial pierce hole seems to work well. Tangent arc is ok for some smaller holes, but lead-out needs to be tweaked accordingly due to the tapering thickness of material near the end of the cut.
Or just get an industrial fibre laser and don't worry about it.
Or who knows, maybe you just picked "outside" when it should have been "inside", totally a user error... ;)
Will_D:
Love the way you managed to colour match our dancing bannanas
:ddb: :nrocks: :ddb:
awemawson:
Depends which bit you look at Will, that yellow doesn't cover well even with two coats :scratch:
Today's job was to finish off the roller. So I took off both skids, lowering the roller to the floor and dragged it into the welding shop. It's blooming heavy and I was anxious not to bend those delicate tack welds.
Not the easiest thing to get at for welding - it ended up propped up against the bench at about 45 degrees, with a couple of clamps strategically placed to stop it rolling away as I welded and dressed back the welds. I reckoned that the smoother it is the less tendency there will be for bits to get wrapped up in it.
Then it was up onto a pair of trestles, masking tape over the bits of axle that go in the bearings, and a coat of primer. A bit of cooking with a fan heater and it was ready for a coat of black top coat. This will probably all roll off when it's first used but should keep the rust at bay until then.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version