SINGER® Heavy Duty 6600C Sterling Computerized Sewing Machine + Accessory Kit | 100 Built-In Stitches, 215 Stitch Applications | 1100 Stitches/min | Metal frame, LCD Screen & 6 One-Step Buttonhole

Before I begin this honest review, I want to say that SVP Worldwide gifted me this sewing machine. Previously, I had a SINGER Heavy Duty Model 4432, but this machine has definitely been an upgrade. I absolutely LOVE how many stitch options this machine has, and that it has the bobbin thread cutter, which makes it way easier to replace my bobbins. I also love that this machine sews AMAZINGLY through 2 layers of thinner pleather, which has allowed me to make belts. I feel that the button stitches sew much cleaner and are easier to set up because of the electric feature on this machine as well. I honestly think if you are looking for an upgrade from the basic Heavy Duty machine, this is a GREAT option. This sewing machine has now become my main sewing machine and does 10/10 work.

I just received this machine for my birthday and what a little work horse she is. Perfect for what I wanted her to do without going into a bigger industrial machine!

[This review was collected as part of a promotion.] I've always used vintage Singer machines, including my grandma's 1960s model, so upgrading to a modern one felt like a big splurge. I was hesitant because of recent criticism toward Singer, but I went with what I knew and chose a feature-packed model—and I'm so glad I did. The machine is lightweight (a welcome change!) and super intuitive. Setup took five minutes, and I'm especially impressed by the automatic needle threader, bobbin cutter, and the built-in guide for presser feet. What started as buyer's remorse quickly turned into regret that I didn't upgrade sooner. My first project—with overcast, zigzag, and buttonhole stitches—took just 20 minutes. It would've taken hours on my old machine. I'm already excited to tackle a quilt next. This machine has truly made sewing fun again.

[This review was collected as part of a promotion.] The SINGER® Heavy Duty 6600C Sterling Sewing Machine is a solid blend of strength and smarts. With over 200 stitch applications, it handles everything from basic hems to more creative projects without hesitation. The heavy-duty frame gives it the durability you'd expect from the name, but the sleek metallic accents and computerized features make it feel modern and approachable. Stitch selection is super simple with the push-button interface, and the built-in options cover just about everything I need—and then some. It's fast, responsive, and sews through thicker fabrics like denim with ease, yet it still has the finesse to handle lighter materials cleanly. If you're looking for a reliable machine that feels professional but still user-friendly, this is a great pick for both beginners and experienced sewists who want room to grow.

I constantly am bumping the reverse button while trying to thread the needle. I have almost pierced my finger several times. Need a machine that is just like this but reverse button moved up a bit… any ideas how to manage?

I must say I truly enjoy this machine. I have many sewing machines and this machine has just enough features to enjoy and is a good workhorse. So far I use it for my bag making and it is able to sew very well thru layers of vinyl without hesitation. The only feedback I have is that the reverse feature is a little bit too sensitive and you need to practice to use it smoothly. I know many say its not a true Heavy Duty but I will disagree its a little more powerful than an average domestic machine at 85 watts at this price range.

Very dissapointed in the lack of instruction. I was hoping for some sort of instruction on line somewhere but no. There was a offer for training at a closed store and again, nothing on line. I was the happy owner of a Singer 750 Golden Touch and Sew and later an Electra but it isn't working well any longer and sadly the 750 is long gone, she would be nearly 60 years old if I still had her. No one had the skill to effect any repairs, which is the reason for this machine.

Completely bummed that the user manual is simply a how-to on setting up the machine. It does not come with any operating instructions.

This is absolutely the worst machine I have ever owned in the 67 years of being a seamstress. All my machines were lost in a house fire. Bought this one and could not be more disappointed. When turned on it sews on its own. Will not hold tension. Vibrates off the table, bobbin cover pops up constantly. BAD! REALLY BAD! I could just cry.