| | |
Hi everyone, after reading here and squeezing my head, i started today my first fixed gantry mill.
This thread might be a help for people that is interested on building their machines. I' ll be posting as soon as i have results, but it will take a while to be ready because i'm coursing my degree right now and i don't have too much free time.
I hope you enjoy!
It's looking good. I am very interested... think of doing one myself
Some questions
What resin and fillers did you use.. if it not a trade secret?
Why the steel tube through the middle?
How will the steel and epoxy handle the different co-fiction of expansion that is going to happen?
It look as you have used brass inserts.. why brass and not steel?
Russell
www.vapourforge.com ..................I recycle electrons.
Resin is EPOLAM 5014 from AXSON, low density and 1,5-2 hours pot life. Filler is:Originally Posted by rusel
It's looking good. I am very interested... think of doing one myself
Some questions
What resin and fillers did you use.. if it not a trade secret?
Why the steel tube through the middle?
How will the steel and epoxy handle the different co-fiction of expansion that is going to happen?
It look as you have used brass inserts.. why brass and not steel?
Russell
- 40% "volcanic" garden stone (5-8mm), it is very irregular has lots of pore so sticks really good to the smaller agregate.
- 30% quartz pool filter sand
- 20% sandblasting sand
- 10-15% resin (i added a litte more to fill up everything)
The steel tubing is designed to route on it's inside all the cables of the machine and also add a little "reinforecement", as long as i experimented, the whole piece was cooked 4 hours @ 80º and nothing happened.
Regarding the inserts, i used the ones i got, they were previously tested and work fine.
Feel free to ask anything more if you want!
Demoulding suceed!
The structure has little air bubbles inside, i'll fill them when i have some time, just finishing and stethic improvement rather than functional.
I added a little more resin on the open side to machine it and get better finishing.
Gantry almost done!
The part look very neat. Can you give some dimension so we can get some idea of scale.
With the small air bubble you could of used a vibrator like in the concrete industry. Hind sight is a wonderful thing.
Are you going to make any more of your mill from EG?
We made a new head on our mill from EG but our vibrator was not strong enough so we got some bubbles also.
But thinking of making a mill total out of EG.
Russell
www.vapourforge.com ..................I recycle electrons.
Actually the whole mix was vacuumed but due to low mould walls and a more expansive mix than i thought, i could not reach pressure 0 and this small bubbles are the result... I first thought about using E/G for the machine bed/base but yesterday found some nice 1M long 80/40 T-slot alu extrusions and now i'm thinking about all the possibilities.The part look very neat. Can you give some dimension so we can get some idea of scale.
With the small air bubble you could of used a vibrator like in the concrete industry. Hind sight is a wonderful thing.
Are you going to make any more of your mill from EG?
We made a new head on our mill from EG but our vibrator was not strong enough so we got some bubbles also.
But thinking of making a mill total out of EG.
Russell
The bridge is:
- 1000mm total length
- 800mm light (in spanish it's called "luz"=light, the distance between pilars)
- 340mm ground to lower point
- 480mm ground to higher point
- 120 thickness
Anybody knows a great store to buy linear guides (Hiwin on THK) within the EU?
This looks like to a start to an interesting build, thanks for sharing.....
and continue to post loads of pics.....
Perhaps you have already seen this one in The Netherlands:
DamenCNC.com
Little update:
Started milling some motor mounts and ballscrew supports, right now i'm quite busy due to university projects but i'll be posting some interested things i expect to happen this week
I finally ordered a set of hiwin linear bearings from a local supplier, 30%off, yeah, big deal!
F**K it... turns out that the 10 mm thick "flat stock" i bought is actually 9.8mm.Little update:
Started milling some motor mounts and ballscrew supports, right now i'm quite busy due to university projects but i'll be posting some interested things i expect to happen this week
I finally ordered a set of hiwin linear bearings from a local supplier, 30%off, yeah, big deal!
My fault to pay an overprized material and not checking it.
No worries, just have to mill some things and everything will be okay
Look what showed up today
I'll skip college tomorrow and fit them into the machine frame and see what happens. Right now i'm really broke but these things are awesome, nothing compared to the "cheap" linear bearings i bought from zapp automation, i now really see that this's a must to for a decent working machine.
Posting tomorrow with detailed pics! Cheers.
Posting Permissions
| | |
LinkBack URL
About LinkBacks
