Some of the more basic questions to answer would be I think:
- is a bottom price welder like the HF all you can afford?
If yes, be prepared to be realistic about poor quality/reliability, and/or be very limited in what you can do with it, and limited or no availability of parts and accessories. But it'll get you started and able to play for a bit (until it conks out which won't be very long probably). Keep in mind you will also need to buy more stuff to actually weld with it. Eventually, the cost of the welder will not be as big as you may first think compared to everything else if you weld more seriously. (For example, I just bought a good helmet that cost me close to 1/2 the cost of a good welder.)
If not, see below.
- will you need no spatter welds and can't spend any time cleaning spattery ones?
If yes, you'll want a MIG
If not, a flux core will be fine (or better for some applications)
- will you ever need to do more than 3/16" or so steel in one pass? (That seems to me rather unlikely for most hobbyist welders.)
If yes, you'll need a 240V machine (or better a 120V/240V dual voltage one). And a good 240V circuit.
If not and if budget is not a major consideration, then consider getting the Hobart 140. It's a fantastic machine and from my research the best quality/price ratio one out there.
- will you ever need / want to do Aluminum? Then you'll need a good and versatile machine. Definitely not the cheapo ones.
- will you eventually want to upgrade?
If yes, you will not have an easy time to get much money out of a HF welder. OTOH, you might be able to resell a good condition Hobart/Miller/Lincoln for not a lot less than you bought it for, especially if in 110V. You might lose less or not much more than the $100 you'll probably not see ever back on the HF.
- Are you in a hurry?
If not, wait for a great deal on your local Craigslist. Welders usually go fast but if you're lucky you'll find one like new because somebody did not know how to set the polarity right and thinks the welder is bad. Ebay is a possibility too but the shipping will usually kill you on a transformer machine. Also, consider putting a Wanted ad on your Craigslist. There must be tons of unused welders gathering dust out there.
Btw, I think that the 90A HF is NOT the right machine to do critical function items like the bumpers and racks that you mentioned. And probably not a good idea to do altogether if you are a beginner welder.
- is a bottom price welder like the HF all you can afford?
If yes, be prepared to be realistic about poor quality/reliability, and/or be very limited in what you can do with it, and limited or no availability of parts and accessories. But it'll get you started and able to play for a bit (until it conks out which won't be very long probably). Keep in mind you will also need to buy more stuff to actually weld with it. Eventually, the cost of the welder will not be as big as you may first think compared to everything else if you weld more seriously. (For example, I just bought a good helmet that cost me close to 1/2 the cost of a good welder.)
If not, see below.
- will you need no spatter welds and can't spend any time cleaning spattery ones?
If yes, you'll want a MIG
If not, a flux core will be fine (or better for some applications)
- will you ever need to do more than 3/16" or so steel in one pass? (That seems to me rather unlikely for most hobbyist welders.)
If yes, you'll need a 240V machine (or better a 120V/240V dual voltage one). And a good 240V circuit.
If not and if budget is not a major consideration, then consider getting the Hobart 140. It's a fantastic machine and from my research the best quality/price ratio one out there.
- will you ever need / want to do Aluminum? Then you'll need a good and versatile machine. Definitely not the cheapo ones.
- will you eventually want to upgrade?
If yes, you will not have an easy time to get much money out of a HF welder. OTOH, you might be able to resell a good condition Hobart/Miller/Lincoln for not a lot less than you bought it for, especially if in 110V. You might lose less or not much more than the $100 you'll probably not see ever back on the HF.
- Are you in a hurry?
If not, wait for a great deal on your local Craigslist. Welders usually go fast but if you're lucky you'll find one like new because somebody did not know how to set the polarity right and thinks the welder is bad. Ebay is a possibility too but the shipping will usually kill you on a transformer machine. Also, consider putting a Wanted ad on your Craigslist. There must be tons of unused welders gathering dust out there.
Btw, I think that the 90A HF is NOT the right machine to do critical function items like the bumpers and racks that you mentioned. And probably not a good idea to do altogether if you are a beginner welder.