Hi Sommersunshine
I use cake racks in the oven for various things, and they have been fine.
But if you don't feel happy about using the cake-rack that you have, how about the rack from your grill pan, or, if you have one, the metal stand from your microwave?
I always buy silicon tools that have a metal insert - quite often it won't say on the pack, but if you try and bend them, you will feel the rigid inner structure.
As for range of knives in the kitchen, I think that is a very personal thing, as is the feel of a knife.
Buying knives like Henckels as seconds can be a bit daunting if you are unsure what to look for- also, if they are packed up in those rigid plastic packs, you can't really check them anyway. But, I have to say, that I have found that TK Maxx will change things if you are unhappy and the packaging has not been damaged and the item is in a 'as sold' condition, even if it's marked as a second. But you might want to check that with Customer Services at your local store before handing over any cash.
You can't check a knife fully in the shop anyway, and they don't identify specific faults, so I think you are on safe ground as far as the Sale of Goods Act goes.
A quick guide to checking knives:-
Find a picture of the knife on the net, and check that the construction is the same as the one you have purchased - some manufactures make cheap versions of their knives, and at first glance they look like a bargain, and it's easy to assume that they must be seconds which explains why they are cheap. Cheap versions of various brands often don't have a 'bolster' - so it's worth comparing with a knife that is full price on the net. Some of the more upmarket knives don't have bolsters at all anyway, such as Global, but then that is how the full range is made.
With the knife removed from all packaging, rest the tip of the knife on a board, and supporting the knife from underneath, look down the entire length of the handle and the blade, checking to ensure that the whole knife is straight - a common fault is that the blades run very slightly off at the point where the handle joins it. The blade itself should also be free from any slight distortions.
Check that the handle is fitted square to the blade - i.e. not slightly skewed. Check that the handle is tight and buts up tightly to the bolster.
Check the blade and other metal areas for fine cracks or uneven grinding.
Turn the knife on its side and the check the top of the blade (the blunt side) it should be straight, or show a smooth, even, profile. Slight defects here may not be a problem at all when using the knife.
A common fault is that a knife has been ground badly leaving a 'wave' or a 'hollow' in the profile of the cutting edge.
How much this is likely to affect the knife in use depends on how you use the knife.
If you use a chopping style, i.e. you lift the whole knife with each stroke, and then it probably won't affect your cutting.
But, if you use a guillotine style, i.e. if you leave the toe of the knife on the board and lift the back of the knife, as the style most chefs are trained in, then you are likely to find that veg with skins, or anything fibrous doesn't get cut right through.
To check the blade for this fault, you need a perfectly flat board, and starting with the tip of the knife resting on the board, lift the back of knife and then slowly lower it down, taking note of the light between that part of the blade edge that is in contact with the board as the knife come down - checking from the side of the knife that is in shadow is the way to do this.
If the blade has a wave or a hollow in the ground edge, then you will see two contact points either side of the "hollow" with light showing through at the point of the 'hollow'.
A practical test is to take some thin spring onion shoots, and see if the knife will chop them cleanly through at all point along the edge of the blade. Needless to say, you do need a dead flat board and a good knife action.
Most likely the blade can be reprofiled by re-grinding, but it does need doing by someone who understands how to handle metals that have been ice hardened, because if the metal is taken to a high temperature during grinding, it is possible to lose the benefit of the original hardening process.
However, by the time you have paid someone to regrind and resharpen, any saving at the point of purchase is probably going to be lost.
Don't let the above put you off, you can pick up some real bargains in TK Maxx - but giving them a close look re the above can help to make sure it really is a bargain.
A couple of links you may find interesting.
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The best value I have seen lately on first quality knives, is makro - a set of Henckels for £99 + vat, or for single knives: paysan.co.uk