Astro Mechanics

Astro Mechanics runs a welding and machining operation out of Round Rock, Texas. The family owned shop has handled machining, welding, fabrication and metal sales since 1947, with 12,000 square feet of workspace and staff carrying over 80 years of combined experience. They cut stock to custom lengths and build parts from steel, aluminum and stainless steel, keeping every piece hand crafted on site. Butch, Fabian, Carrie and the rest of the crew take on both one-off repairs and larger fabrication runs.

Customers drop off jobs like trailer hitch fixes, boat fender work, AC line repairs on older vehicles, cast iron armature restoration, go-kart axle and mount builds, and tractor carb and chain repairs. Butch and Fabian have turned around emergency parts in under an hour and solved leaks on aluminum lines that could not be replaced off the shelf. Reviewers note the shop accepts small orders without complaint, cuts lengths shorter than 20 feet when needed, and delivers clean results on 120-year-old pieces and daily driver parts alike.

The crew answers calls quickly, stays open past closing when a customer is stuck on the road, and calls back once work is finished. Pricing stays fair across small and large jobs, with no pressure to buy full stock lengths. The shop sits at 1411-A Sam Bass Rd and handles local needs plus the occasional out-of-town emergency. Same day service applies to many metal cutting and welding requests.

Google shows a 5 star rating across 33 reviews. Recurring comments praise the fast turnaround, honest quotes, friendly treatment of every size job, and solid outcomes on both emergency fixes and precision parts.

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“Astro Mechanics, thank you for promptly addressing our need and fabricating the required part (Jeff and Kim) within an hour. Your responsiveness, technical expertise, and commitment to custmer service played a critical role in our success. We truly appreciate your dedication and would highly recommend your team to anyone in need of reliable, high-quality work!!”

“I have had a great relationship with Astro Mechanics for about 19 years now. They have always gone to great lengths to help us out when we have had emergency’s and general needs. I look forward to working with them for many more years! Thanks Carrie, Butch and Fabian and the whole Astro Mechanics family!”

“My number one welding shop best experience I ever had. Thanks guys keep up the good work! See ya soon!”

“A Godsend!! Traveled from 5 hours away for a job, accidentally blew up my tire on the highway and needed a last minute dealership 20 minutes before their closing time. I called ahead and told him I’m putting a spare tire on but might be there right at closing time— ended up calling again before they closed to ask if he could wait 10 minutes past closing time for me to arrive and my angel had waited for me!! Super thankful and if I ever worked in the area again I’d keep this faithful and reliable shop in mind if I ever came across a car emergency again!! Can’t express how thankful I am as it was getting late and dangerous and I’m able to return home safely thanks to this location!! A blessing!”

“Treated me like I've been a coustomer for years. Fast turnaround and precision work. My small order was no problem. Thanks.”

“Great , friendly, and knowledgeable staff. They are willing to cut less than 20 foot lengths of what I needed. In most places, you have to buy at least 20-foot pieces. I couldn't have hauled it myself in 20-foot pieces. I had an awesome experience.”

“I probably drove by Astro on Sam Bass a couple hundred times before I stopped in for a small welding repair job. They did an excellent job. Since then I’ve been back for a couple of smaller jobs. I have always found them to be honest, friendly, fair in pricing, and just great to work with. I highly recommend them. Stephen T”

“I had Astro Mechanic repair the AC Line to my Civic a few months ago. It was an older aluminum AC Line, that i could not find the replacement for anywhere. I waited a bit before leaving a review so i can check for leaks. They tig welded the line for me, did quality work, at a great price. This is a business that you want to support. They are fair and honest. I will be coming back to them for any of my welding needs.”

“The work I needed done was small, so I chose Astro Mechanics because their website said they are family run. So glad I did. In spite of being a big operation they treated me like a neighbor. So friendly, yet so professional. Fast, excellent results, excellent experience. They were an amazing find.”

“Excellent work done on a 120 year old cast iron armature. I was a bit nervous having them work on it due to its irreplaceability but sure enough they did a GREAT job on it and exactly how I wanted it done. Turnaround time was reasonable, too. Will definitely go back!”

“I should have wrote this review years ago but better late than never. Master Butch and team are the best of the best in metal working. They have done so many projects for us I cannot even count anymore. Always done better than expected for a cost better than expected. What more could you ask for! Butch and team are wonderful people as well. We are so lucky to have them around in this day and age with good machinists harder and harder to find. Astro Mechanics has a rich history in metal working even building complex mounts and telescopes for universities and research institutions (even NASA!) in the 50s, 60s, and 70s. Their telescopes are still in use today. The business dried up in the late 70s so they had to switch to general machining. They have done many astronomy related matching jobs over the years. The most recent job was not an astronomy related machining job but repairing a badly damaged differential housing out of a tractor. Other machine shops closer to where the tractor broke down were scared to take on the task of repairing the housing. I knew who would not be afraid to take it on, off to Astro Mechanics I went. Butch and team made the housing look like new and they e”

“Great experience with Astro Mechanics! I came in with a small but challenging job and was treated as if I'd been dropping off work for years! Fast turn-around expertly solved. Excellent machine shop in our own back yard. Thanks, Astro!”

“Its spring break and my grandsons are bugging me to repair the carb and tighten the chain on the go-kart re-built with the assist of Astro Mechanical several years back. The machined stainless axle, bearing carriers and motor mount they fabricated were executed with precision and have survived the abuse of the boys. Mr Fabian et al were great to work with. Excellence comes at a price and I was glad to pay it.”

“I always forget to post a quick review, which means several years ago I should have given 5 stars. Butch and team are awesome, they are great at solving your needs. If you need something machined or welded, big or small, they can do it and do so at very reasonable prices. Thank you.”

“If you are not taking your business here, you should! They do great work, at reasonoble prices, and are very down to Earth.. Definitely a hidden gem for metal work and machining. It's businesses like this we need to support whole-heartedly because it's a dying craft. Every project I've taken to them has come out perfect.”

“My trailer hitch broke, got in with no problems. They got everything done really quick and at a good price. Highly recommend, very nice people.”

“10/10 shop, couldn't recommend them more”

“Great Machine Shop! They did some work on some boat fenders for me, and they turned out amazing. quality work! My new go to machine shop!”

“Needed some welding repair on my 1961ish IH tractor. They did an awesome job, fast turn around and good price. I am very glad I was referred to this company.”

“Glad I called Astro Mechanics for a quote on the part we needed. They have the material ( which was hard to find ) and quickly provided a quality product. They called when the part was ready. Will use them again in the future. Thanks Butch.”