Machine rebuild time - options...

[CraftyGeek]

Thanks for the replies chaps.

I didn't realise that you could get a drill press so cheap - looked at some on Machine Mart earlier...there's a branch just down the road from where I work, so i'm tempted to go that route.
I already have scribes/punches etc - thats not a problem.

Regarding the brackets for creating the frame - can anyone point me in the direction of some suitable candidates?

Going to look into the price of steel box in this area....i'm assuming that you're all referring to mild steel & not stainless?

[m_c]

Regarding the brackets for creating the frame - can anyone point me in the direction of some suitable candidates?

It all depends on what you're trying to join, but flat plates, or sections of angle will work depending on how/where you want to join sections.

Going to look into the price of steel box in this area....i'm assuming that you're all referring to mild steel & not stainless?

Yes, mild steel, unless you're suddenly got lots of money burning a hole in your pocket!

[JAZZCNC]

Regarding the brackets for creating the frame - can anyone point me in the direction of some suitable candidates?

Just order a length of wide flat plate then mark cut to shape and size using the angle grinder with the micro thin cutting disc's I mentioned before. Very quick and easy.

The combination of Pillar drill, Angle grinder, decent elec hand drill with a few basic tools like sharp scribes etc is all you need to make a very strong frame.

One good piece of equipment I recommend buying is set of transfer punch's like these. . .http://www.rdgtools.co.uk/acatalog/info_1791.html
They make transfering holes from one piece of metal to the other very accurate and easy.!! . . .Very good when making multple brackets etc.

[CraftyGeek]

I'm liking the punch set...I think I'll get myself one of those.

When you say micro thin cutting disk..what thickness are they? I have some 2.5mm discs already...how would they do?

Got a quote earlier for 50mm box steel (3mm) it does work out a lot cheaper, so I'm going that route.

Need to get the workshop sorted, then get on to designing the frame.

[Jonathan]

When you say micro thin cutting disk..what thickness are they? I have some 2.5mm discs already...how would they do?

tool and cheap thats quick for cutting steel is 1mm micro cutting disc's

2.5mm is bad as it has to remove a greater amount of material, so the cutting force and wear on the grinder is higher and it's not as fast.

Need to get the workshop sorted, then get on to designing the frame.

Design everything before making, else you'll likely regret it.

[m_c]

When you say micro thin cutting disk..what thickness are they? I have some 2.5mm discs already...how would they do?

2.5mm are the older standard thickness cutting disks. Nothing wrong with them if that's what you already have.

2.5mm is bad as it has to remove a greater amount of material, so the cutting force and wear on the grinder is higher and it's not as fast.

I wouldn't call them bad. They were used for many years as cutting discs.
And how does a thicker disc increase cutting force on the grinder?
You shouldn't be forcing the disc into the metal anyway, as all you do is cause extra heat, wear the disc quicker, and put unecessary strain on the grinder.

[Jonathan]

I wouldn't call them bad. They were used for many years as cutting discs.

I should have said 'worse' or 'sub-optimal' instead of bad.

And how does a thicker disc increase cutting force on the grinder?

The steel is cut by the disk generating friction which subsequently melts it away. If the disk it wider the area in contact is greater, therefore for a given feedrate you have higher friction and thus a greater force. Can also argue it with wider disk must require more power, and since power and torque are related by the simple formula, more power means more torque and if there is more torque on the disk the only way that can occur is from a greater cutting force. This site says 'thinner ones will put far less strain on your machine, create less sparks and give a quicker and cleaner cut', which is basically the same thing:

http://www.ultimatehandyman.co.uk/Me...ting_metal.htm

Could probably find a better reference... but not now.

[JAZZCNC]

When you say micro thin cutting disk..what thickness are they? I have some 2.5mm discs already...how would they do?

Got a quote earlier for 50mm box steel (3mm) it does work out a lot cheaper, so I'm going that route.

Need to get the workshop sorted, then get on to designing the frame.

Well they will do if you have them but the 1mm thickness disc's really make light work of it. . . .Like these http://www.arceurotrade.co.uk/Catalo.../NEW-Abrasives
I don't even bother using an hacksaw to cut bolts etc anymore because these are just thin as hacksaw blades and slice thru bolts in seconds with perfect cut.

Edit: Ha ha ha . .The things we numpties will Argue over..!! . . . Thou it's nice to know it's not just me who argue's with Jonathan.!! . . . .Thou I agree with him completely on this occasion, less width = less friction obviously means less power & force required.!!. . Thats gota be a first eh Jonathan. .:lol: