Been going here for the past couple years. I have had them resurface many flywheels and rebuild…read moreseveral Honda cylinder heads. They do good work but turnaround time can be slow.

I've used L&O a couple of times, with great results. They decked and did a valve job on my Honda…read morecylinder head. Did a great job, and the cost was very reasonable. knowledgeable staff.

I have been going to Jan and Deily for the past year and a half, for various company projects, as…read morewell as my side-projects for my house and cars. So it has been due time for me to write a review for him. Before I do, I have to say it is funny to read other reviews on Yelp, like the one about pressing car bushings (which truly not even specialized car shops would do). I have to go back to Jan for that, because I did not know he did such things. I had given up on replacing bushings on my car, after being turned down by so many local auto shops and mechanics. Now for that reviewer that rated them badly for a four week lead time... what sort of expectation was that? A poorly-run machine shop has downtime to let anyone cut in. By all means go to those shops instead or pay an arm and a leg, if that is the expectation... however, Optima Precision operates like all properly run, established machine shops do... schedule your work into their operation or work an expedite out with Jan and Deily... We are even lucky they are open to our side-projects. Bottom line, talk it out with them. They are very open to making things happen! Anyways, just to give a little background, I formerly worked as a design engineer for Zodiac Aerospace's oxygen system division, that made a lot of pneumatic components such as valves and manifolds. I can certainly attest that Jan and Optima Precision has the expertise and capabilities to machine top-notch quality parts. Whether you are dealing with extruded, cold-pressed, tempered aluminum, steel or etc., or softer brittle plastics like plexiglass or acrylic, up to something like 6 feet by 4 feet (double check with him), he and his crew can take care of that. I originally went to Optima Precision because Jan and Deily were the more responsive, local machine shop. They are very approachable and easy to communicate with (their English is solid). Most importantly, their pricing and lead times were very competitive, compared to the other shops in the area. Easiest way to describe them is that they are flexible and understanding like the old machinists but they operate with the newer CNC mills (even though they have Bridgeports off to the side). In other words, they are not like other new machinists that refuse small orders and cannot think other than what their CNC machine tells them they can or cannot do. What do I mean by an old machinist? Jan did not just go off my engineering drawings, but he verified my design intent to make sure my parts would fit and functioned well in my application. He was more concerned with what I wanted my part to turn out as, rather than what his machines could or could not do. To affirm other reviews, Jan and Deily are truly open to make small quantities (even one or two pieces like other reviews stated) and, of course, scaling to large production quantities. If you have worked with machine shops enough, you would understand that Optima Precision is a no brainer to have your parts, at least, quoted there each time. Long review, but hope that helps you all when considering!

I approached Optima Precision to machine 2 simple holes in an automotive part. I explained exactly…read morewhat needed to happen and what the part was for. I mentioned I was not in a hurry and could leave it for the weekend. Before I could finish explaining and before price was even discussed I was interrupted and told the wait would be 4 weeks. To machine 2 holes? Shouldn't take a competent machinist more than 10 minutes. No thanks. I dropped the part off at another machine shop and had it back minutes later machined perfectly to specification.

I recently had an issue with my old Chevy truck's cylinder head. The head gasket blew so I took the…read morehead to Le's to see if it was damaged. My instinct was right the cylinder head was also damaged. I got a call from them telling me it was no longer usable. I stopped by to see what I owed for their time and was told no charge for the diagnosis. Needless to say I was happy with the unexpected freebie. My impression of Le's was a positive one. It's a handful of guys working their asses off six days a week.

From my experience this machine shop is a cylinder head only machine shop. But it's exactly what I…read moreneed for my projects. I brought a few pieces over here and they give good deals and quick turnaround. Be sure to strip down your head so that they could do the work that need to do and not charge you extra.

I recently had the pleasure to work with Nhut and I was immediately greeted with amazing…read morehospitality as soon as I walked through the door. He went above and beyond with making sure my needs were met. I highly recommend coming to his place he will definitely take care of you!

Nhut, was recommended to me by the range guys at work. Friendly staff and quick turn-around time…read moreon my M&P.

If you've got a crankshaft that needs any kind of machining polishing straightening preparing…read moreinspecting, there's only one place in Northern California to bring it to. Ed runs a tight ship. When Accuracy needs to be measured in microns you don't take any shortcuts. Bring your shaft to Ed he will straighten you out

Best of the best. Ed runs an honest shop. Great guy. I took the crankshaft from my 1967 Norton…read moreMotorcycle. He chucked it in a lathe, measured it, spun it, and explained to me what was wrong, what I should try, before I pay him to clean it up It's a real shop, not a bunch of junk sent out or replaced. Real men, real lathes, and real knowledge If I can make the crankshaft work? I'll definitely be taking it back to him to clean up If I cannot? I will still be sending everyone I know to their shop for top quality work

Does a good precised machining job. Cheap and fast . They…read morehave good knowledge on what they do. They offer advice upon confusion. Free quotes .

Felt the need to drop these folks a review due to the exceptional work. I had an excellent…read moreexperience with the service Fuentes Machine Shop provided . I was given prompt responses to my inquiry's and they made sure to be very thorough with the requirements . Turn around time was very fast. This was my first time using this shop and it won't be my last.

I had a special project that needed an expert machinist to work on and Jesus was extremely helpful…read more He was very attentive and completed the required work very efficiently. I would not hesitate to go to them again as they are extremely knowledgeable and helpful. Kudos to Jesus!!!

Highly recommended: fantastic pricing on my project involving a cylindrical piece of aluminum. Jose…read moreis diligent, he thinks things through, and is very professional - Thanks Jose!

6/27/20 15days ago I had my Work Vs-XX done…read more Went back on 6/22/20 to have my BBS LM done. As to no surprise, they turned out great. Please always make sure you communicate with Nick. He will get back to you as soon as he can. He is great at what he does and definitely be coming back to get more parts powder coated.

THE BEST WAY TO CONTACT HIM IS TEXT MESSAGE…read more You really need to give it up to Nick and all his shop. He's extremely hard working and he is a one-man-show. I know it can be difficult to get a hold of him but once you understand how he works it all makes sense. He's not going to pick up a phone call and he won't respond back too text right away because he's working with his hands. That means he's spending the same quality time with your parts when it's your turn. I am building out a new BBK and wanted to overhaul the entire thing. I've called around and they shops will nickle and dime you for every part of the service. Everything costs extra. Nick has one set price and it's very reasonable (it's CHEAPER than places I've called). He cleaned, media blasted, power coated, applied stickers, clear coated and rebuilt all of my calipers. I just provided him the rebuild seal kit. He was very realistic about his time frame and delivered on schedule. It was less than two weeks. He does a full time job and does his own business after. He's extremely hard working.