I've been casually looking for an "affordable" sewing machine for a long time that I could goof around & learn upholstery with.... With our house move last year I finally have enough work space for one, and I'd like to go beyond just installing repop covers & repairing springs.
Apparently the moons aligned and I stumbled across a CL ad for a Consew 224 & table for $200 a couple weeks ago... Couldn't pass it up. Now I have to figure out how to use it! LOL
Anyway... thought I'd share.
I usually see them on eBay and CL for around $1,000 used.
Its very hard to control the speed, I may see if i can adjust the pedal to limit the WOT. When I can manage to maintain a reasonable speed I have done well- but when it goes too fast suddenly, it breaks the thread.
My machine is a Consew 206RB. Very similar to yours.
Tricks I've learned for controlling speed: I have a wooden table in front of the sewing table. The edge of that table lines up approximately straight out from the base plate of the sewing machine. When I start a line of sewing, I brace my left knee against the wood table leg and just use very slight pressure on the pedal with my left foot. You can control your speed easier if your left leg is braced against something solid. Also as mentioned, slowly spin the belt pulley with your right hand just to get it started. You can brake the pulley too with your right hand if it's stitching too fast. It also helps to push the needle down into your fabric by hand first (with the belt pulley), so that when you start with the foot pedal, the needle will be on the up stroke. You're not trying start the needle down through all the layers of fabric, which takes more pressure to get started.
I'm teaching my grandson sewing techniques right now. He is starting his own upholstery shop. After watching me, he asked how I can go so slow, one stitch at a time, especially on tight curves. I showed him the above tricks, and it works for him. As with anything, it takes a LOT of practice.
Just the opposite of drag racing, you want to go as slow as possible when sewing. Hope this helps!