Make/buy vegetable cage

Hi everyone - Hoping this is the best forum to place this question.
I'm looking for advice on either making or buying a vegetable cage to protect my vegetables this year. I'm sick and tired of trying to do battle (and losing) with all the pests that get to my plants every year. My veggie plot is at the bottom of my 100ft garden and is only a modest arrangement but I do love to pick my own runner beans etc every year. I want to grow brassicas this year but need to protect them. Are there any simple cages I could construct or buy and would you recommend a full height (6ft) version for ease of getting to plants.
We plan to grow purple sprouting broccoli, cabbage,  sprouts & spinach. Possibly a few mini cauliflowers if we have space.
Any thoughts please - I'm desperate to get started before it gets too late into the year....and hubby goes off the whole idea 

I think the tall frames work out quite expensive.

Here's a link for some ideas from the forum

http://chat.allotment-garden.org/index.php?topic=34665.msg415429#msg415429

As you had asked the question on 2 boards I have merged them

i have made a cabbage cage in the past but found it heavy to lift.
i settled on lenths of inch by 2 inch cut to the size u want and a bit longer for the piece that goes in the ground.then i got some old tennis balls put some slits in them and stretched over the ends of the wood.then drape the netting of your choice over the whole thing and bury or peg down the edges.
the tennis balls are to stop  the wood destroying the nets.
build a ball frame at a fraction of the cost 

 i sympathise with you i had much the same problem with rabbits and pigeons for some  years so i finally decided to do something about it

so i construct a brassica cage every year and this is my brassica cage firstly measure the brassica plot my plot is the same each year i then put knock i round post's both sides and ends about 2Mt's apart then i use 1 mtr wide wire rabbit netting but environment mesh is as good then i put the netting on the post's all the way round the plot sealing the cage i bury part of the netting in the ground but you can peg them if so desired  

so with the netting round the brassica plot we then need to put the top net on you will need to purchase a plastic net to cover the top as said tennis balls cut in half can be used on top of the post's i use old pop bottles cut in half using the bottom half on the top of the post you could use roof battens or laths nailed to the top of the post's without any bottles and with a piece of wood across the cage so you can role the plastic netting on and off the top when you need to weed the plot etc


i use a scaffolding net its a bit heavy to put on and off but it was cheep and it does the job i know longer have any problems from rabbits or pigeons its a bit time consuming and there is an initial  cost but every thing is re-usable each year with care

hope this is of some use to you good luck RW

i have made a fruit cage this week but same could be used as a veg cage i used the frame from an old gazebo which the cover had riped! i covered the sides in debris netting and used some reclaimed decking to make a raised bed inside ill try to get a picture up this week. I dont use it for veg though as i like to rotate the veg patch so use water pipe bent over as hoops with the debris netting over that as many people tend to do!