u/Fast_Alternative_322

Hey fellas, i want to make DOZ amplifier but can't find any trusted and verified pcb overlay/ traces i could etch, can somebody provide me with some information and traces.

I wanted to do an amplifier build but i have 0-24v torroidal instead of 24-0-24 which most project use. Can somebody suggested me a low wattage amplifier project i can build. It would be even better if there are PCBs available to buy.

I too have a class a 4s amp in process and it uses 60v psu.

https://preview.redd.it/1ymwiam527ih1.png?width=1058&format=png&auto=webp&s=0be314d518f77b8687bddfdaa292283a55562b38

Hey guys,

I'm cutting a window in a mild steel tube (155 × 46 × 8 mm wall) using a 20 mm 2-insert indexable end-mill with Widia PA120 grade APMT 1604 inserts.

Setup:

• BT40 ER40 collet holder
• 2D contour toolpath
• 1 mm depth of cut
• 650 mm/min feed
• 2200 rpm
• Not plunging/ramping – I pre-drill a hole so the tool just enters and starts cutting to save time

Problem: inserts are wearing out way too early. I tried going deeper(2mm), but it started making weird noises at random, so I backed off.

Is this a speeds & feeds issue, toolpath problem, or should I change strategy completely?

Would thinner but deeper cuts be better? Or something else (different DOC/WOC, climb vs conventional, better entry strategy, etc.)?

Any advice on how to do this better would really help! And fusion advice is welcome too on which strategy to use and what not to
Thanks!

​

I just started a machine shop and often run into parts with no drawings. Measuring them by hand involves a lot of trial and error. Some are worn or damaged and need replacements.

I mainly need to capture part outlines, bolt hole locations, collar positions, and similar features. Accuracy around 0.1 mm in real-world use is fine.

Parts are mostly metal, with some glass or plastic mixed in. Surfaces vary a lot — shiny, dark, rusted, etc. I just need clean, usable data I can work with.

What’s a genuinely cheap scanner that can handle this kind of work?

Options available in my local market around my budget:

- Orbbec Gemini 215

- Creality CR-Scan Ferret

- Creality CR-Scan Ferret SE

- Creality CR-Scan Ferret Pro

- 3DMakerpro Moose

- 3DMakerpro Moose Lite

- 3DMakerpro Mole

- 3DMakerpro Mole Lite

Any experience or recommendations with these (or similar budget options) for scanning mixed metal/plastic parts?

​

I just started a machine shop and often run into parts with no drawings. Measuring them by hand involves a lot of trial and error. Some are worn or damaged and need replacements.

I mainly need to capture part outlines, bolt hole locations, collar positions, and similar features. Accuracy around 0.1 mm in real-world use is fine.

Parts are mostly metal, with some glass or plastic mixed in. Surfaces vary a lot — shiny, dark, rusted, etc. I just need clean, usable data I can work with.

What’s a genuinely cheap scanner that can handle this kind of work?

Options available in my local market around my budget:

- Orbbec Gemini 215

- Creality CR-Scan Ferret

- Creality CR-Scan Ferret SE

- Creality CR-Scan Ferret Pro

- 3DMakerpro Moose

- 3DMakerpro Moose Lite

- 3DMakerpro Mole

- 3DMakerpro Mole Lite

Any experience or recommendations with these (or similar budget options) for scanning mixed metal/plastic parts?

https://preview.redd.it/jlkmsu9t7nch1.png?width=791&format=png&auto=webp&s=edd0546c526ff52fae9579ded480b27c82efe2b7

https://preview.redd.it/euq98jwv7nch1.png?width=583&format=png&auto=webp&s=b1255d3453cb4326d6b3579deae9d6d26d768917

https://preview.redd.it/jl8qm9jz7nch1.png?width=392&format=png&auto=webp&s=076c665f1311cde9249b7403cccbc3e46528addb

I have to bore out both sides of a bearing block in a single setting to maintain concentricity, but there is a flange in between. What shall be my plan of action? Also, will this type of 75mm boring head be suitable for this job to bore both sides to 130mm? And how should I do the bottom side? Will I need to open the tool up and put it upside down, and then take a fresh reading on both sides? Any video of somebody doing the same?
Can I do it in 2 settings, first bore 1 side, then put the finished side on a self-centering 3-jaw chuck? Will it be as accurate? Chasing what tolerance is in case of a concentric bearing 0.05 mm? They will be under a heavy load in plywood-related machinery.
What is the easiest and most sensible option?

How to use circular interpolation cycle for a rough bore with radius. I have a 50mm high feed cutter and want to enlarge a dia 140mm bore to dia 177mm Using radius method. Some refference i took from google are working differently than expected.

I have called cutter to x0y0 in main program and then called sub program loop.

What shall be my sub program ?

Z-0.5; ( move z down)

G02 * * * * ( what to do next)

I have a 65 x 23 ft workshop where CNC milling and turning make up the bulk of the work. I'm now running into a problem with heavier pieces — some up to 200 kg — that are way beyond safe manual lifting. I don't have any proper workpiece lifting equipment and I'm on a very tight budget, so I'm trying to figure out the easiest and safest way to handle this without breaking the bank.

A full overhead workshop crane is on my long-term wishlist, but it's not happening right now.

One idea I had was to add a beam across the width( 23ft) of the shop and run a chain block or winch on it. Is that a sensible option? Has anyone done something similar in a small-to-medium workshop?

What have you guys found works best for daily 80kg and occasional heavy lifts (up to 200-250 kg) when you're trying to keep costs low? I'm looking for practical, safe solutions that won't turn my shop into a construction zone or cost a fortune.

My walls are made of brick, and the roof is metal.

Any advice, links to setups, or lessons learned would be really appreciated! Thanks.

https://preview.redd.it/3ta4k0vo9p7h1.png?width=2000&format=png&auto=webp&s=0104e75405c6f3af3516e686dd0193b94b6faecb

I am currently proof-machining (roughing) forged cylinders on my CNC lathe. The parts weigh 100–120 kg and 75kg finished with a 320 mm diameter max . The operation involves only facing , turing and boring, and we are doing this in bulk quantities.

This job is tying up my main CNC lathe and preventing me from running higher-value work. I am looking for a used machine dedicated to this operation.

Should I stick with a conventional horizontal CNC lathe, or would a small 400×400 mm VTL be a better choice for this type of part?

Both machines are available at similar prices with comparable specifications. For these relatively heavy and short forged cylinders, would a VTL offer any significant advantages in terms of rigidity, chip evacuation, setup time, or productivity?